Foundations of library science: Ranganathan's five laws

In short

The Five Laws of Library Science, stated by Dr S. R. Ranganathan in 1931, are the normative principles from which almost every rule of modern library practice — open access, reference service, classification, cataloguing, stack planning, weeding, automation — can be derived. They are not statutes but "laws" in the sense of first principles: short, testable statements against which any library decision can be judged. Every Indian LIS syllabus (UGC CBCS B.LISc / M.LISc "Foundations of Library and Information Science", IGNOU BLIS, and the UGC-NET Library and Information Science paper) opens with them, and they are the single most predictable question in both theory papers and interviews for Library Trainee, Library Assistant, Semi-Professional Assistant and Librarian posts (UGC/AICTE institutions, DRDO, ISRO, CSIR labs, Parliament Library, public library systems, school libraries under CBSE norms). A candidate is expected to state each law, name its implications for the book, the reader and the staff, and apply it to a concrete situation.

Explained

Dr S. R. Ranganathan and the origin of the laws

• Shiyali Ramamrita Ranganathan (1892–1972), born at Shiyali (Sirkazhi), Tamil Nadu; a mathematics lecturer who became Librarian of the University of Madras in 1924 and trained under W. C. Berwick Sayers at University College London (1924–25).
• Called the Father of Library Science in India; his birthday, 12 August, is observed as National Librarian's Day in India.
• The laws were first published as *The Five Laws of Library Science* (Madras Library Association, 1931); the second edition (1957) added his later thinking. The phrasing is attributed to a conversation with Prof. Edward B. Ross of Madras Christian College, who suggested the laws be stated as "laws" of a science.
• Other contributions that rest on these laws: Colon Classification (1933, first edition), Classified Catalogue Code (CCC, 1934), the Prolegomena to Library Classification (canons and postulates), the facet formula PMEST (Personality, Matter, Energy, Space, Time), the three planes of work (idea, verbal, notational), the Spiral of Scientific Method, and the Model Public Library Act (1930 and later versions) which influenced the Tamil Nadu Public Libraries Act, 1948.
• He also gave the Five Fundamental Categories, the Chain Procedure for deriving subject headings, and the concept of reference service as a professional duty rather than a courtesy.

The five laws, stated and explained

1. Books are for use. A book's value lies in being read, not in being preserved intact on a shelf. This law broke the chained-book, custodian mentality of earlier libraries.
2. Every reader his or her book (often written "Every person his or her book"). Every reader — regardless of age, caste, sex, occupation, language, ability or distance — has a right to the material suited to them.
3. Every book its reader. Looked at from the book's side: every item in the collection should find the person who needs it; no document should remain unused because it is hidden.
4. Save the time of the reader. The library's procedures must minimise the reader's effort and waiting; later writers correctly add "and save the time of the staff", because staff time saved is reader service delivered.
5. A library is a growing organism. A library grows in collection, in readers and in staff, and like an organism it also sheds dead matter. Only a growing thing survives; so buildings, furniture, catalogues and systems must be planned for change.

Implications of each law (the examinable table of consequences)

• First law — Books are for use
  • Location: the library must be centrally and conveniently placed, not in a remote block.
  • Hours: long and convenient opening hours, including before and after class/office hours; many Indian academic libraries run extended or 24×7 reading rooms in exam season.
  • Furniture and building: comfortable seating, good light and ventilation, shelves of accessible height.
  • Book selection: buy what will be used, in the language and level readers need.
  • Staff: a service-minded, trained librarian, not a mere custodian; lending must be liberal, not grudging.
  • Open access to the stack is the direct consequence; closed access defeats the law.
• Second law — Every reader his or her book
  • Obligation of the State: library legislation and public funding so that access does not depend on the ability to pay; free public library service.
  • Obligation of the authority: a balanced book-selection policy covering all classes of readers, sufficient budget and multi-lingual stock (Indian libraries must plan for English plus the regional language(s) and Hindi).
  • Obligation of the staff: reference service, reader guidance, reservations, inter-library loan, services to children, to industrial and rural readers, and to persons with disabilities (in India now a statutory duty of educational institutions under the Rights of Persons with Disabilities Act, 2016, which requires accessible material and reasonable accommodation; accessible-format copies for persons with disabilities are permitted as a fair-dealing exception under section 52(1)(zb) of the Copyright Act, 1957, as amended in 2012).
  • Obligation of the reader: use the library responsibly, return on time, observe silence and care of books.
• Third law — Every book its reader
  • Open access again, so that the browser meets the unexpected book.
  • Shelf arrangement by a classified order, with a good classification scheme (DDC/CC/UDC) and a catalogue with adequate added entries and subject entries so each book is approachable from several directions.
  • Publicity: displays of new arrivals, book lists, bulletin boards, OPAC "new additions" feeds, current-awareness service (CAS) and SDI.
  • Extension work: mobile libraries, deposit stations, exhibitions, book talks.
• Fourth law — Save the time of the reader
  • Centralised, well-run circulation (Browne, Newark, bar-code or RFID self-issue) to cut queue time.
  • A helpful catalogue/OPAC with author, title, subject and keyword access; shelf guides and stack guides.
  • Classified shelf arrangement so related material stands together; reference service to answer rather than to point.
  • Delivery at the point of need: document delivery, e-resources accessible from the hostel or desk, consortia access.
  • Efficient staff and good internal routines — hence the corollary "save the time of the staff".
• Fifth law — A library is a growing organism
  • Growth of three kinds: collection, readership and staff.
  • Child growth (growth in size, typical of a young library) versus adult growth (replacement of parts at a steady size, typical of a mature library) — a frequently asked distinction.
  • Building: modular, expandable plan; provision for additional stack and seating.
  • Classification and catalogue: a scheme hospitable to new subjects (Ranganathan's canon of hospitality in array and in chain) — the reason he preferred an analytico-synthetic scheme to an enumerative one.
  • Weeding, stock verification and discarding of obsolete material; relegation of little-used stock to compact or remote storage.
  • Technology: adopting automation, digital libraries and new media as they arrive.

How the laws generate professional practice

• Open access satisfies laws 1, 3 and 4 at once; this is why it is the standard in Indian college and public libraries.
• Classification serves law 3 (bringing the book to the reader) and law 4 (speed of location); cataloguing serves laws 2, 3 and 4.
• Reference and information service is the operational form of laws 2 and 4.
• Library legislation is the operational form of law 2: free service as a State obligation. India has no central public-libraries Act; it is a State subject (Entry 12, State List). Tamil Nadu (1948) was the first; Acts exist in about 19–20 States/UTs — Andhra Pradesh (1960), Karnataka (1965), Maharashtra (1967), West Bengal (1979), Manipur (1988), Kerala (1989), Haryana (1989), Mizoram (1993), Goa (1993), Gujarat (2001), Odisha (2001), Uttarakhand (2005), Rajasthan (2006), Uttar Pradesh (2006), Bihar (2008), Chhattisgarh (2008), Arunachal Pradesh (2009), Puducherry (2007) among them; the exact current count varies with new enactments, so state it as "about 19–20 States/UTs" rather than a fixed number.
• Raja Rammohun Roy Library Foundation (RRRLF), Kolkata, set up 1972 under the Ministry of Culture, funds public libraries on a matching-share basis — an institutional expression of the second law. The National Mission on Libraries (NML, 2014) and the National Education Policy 2020 (which calls for libraries in every institution and for building a reading culture) continue the same obligation.
• Delivery of Books and Newspapers (Public Libraries) Act, 1954 requires a publisher to deposit one copy with the National Library, Kolkata, and one each with the Connemara (Chennai), Central (Mumbai) and Delhi Public Libraries — a legal device serving laws 1 and 3 by guaranteeing availability.

Extensions, criticisms and the laws in the digital age

• Additions proposed by others (know these as proposals, not as Ranganathan's own):
  • A commonly taught sixth law, "Every reader his freedom", and a sixth/seventh law, "Save the time of the staff".
  • Michael Gorman's *Five New Laws of Librarianship* (1995): libraries serve humanity; respect all forms by which knowledge is communicated; use technology intelligently to enhance service; protect free access to knowledge; honour the past and create the future.
  • Carol Simpson's "Five Laws of the Internet" and Alireza Noruzi's "Five Laws of the Web" (2004) restate the laws for web resources (for example, "web resources are for use", "the Web is a growing organism").
• Criticisms: the laws are normative and unquantified, so they cannot be tested statistically; "book" is a narrow term for today's documents (read it as "document" or "information resource"); law 1 and preservation of rare material conflict; law 2 can collide with copyright, licensing and censorship; the laws say nothing about cost, pricing or digital rights management.
• Restated for digital services: *resources are for use* (don't buy e-journals nobody uses; watch COUNTER usage statistics); *every user their information* (remote access, VPN/shibboleth, accessible formats); *every resource its user* (discovery layers, metadata, SEO of the institutional repository); *save the time of the user* (single-search discovery, federated search, chat reference); *a digital library is a growing organism* (scalable storage, migration of formats, preservation planning).
• Indian digital expressions: the National Digital Library of India (NDLI, IIT Kharagpur), e-ShodhSindhu consortium for e-resources in higher education, Shodhganga (ETD repository, INFLIBNET), DELNET, and e-Granthalaya (NIC's library management software used by many government libraries) — each can be justified in an exam answer by naming the law it serves.

Key points

• Five Laws – stated by Dr S. R. Ranganathan in *The Five Laws of Library Science*, 1931 (2nd edn 1957).
• First Law: Books are for use – implies good location, long hours, liberal lending, open access, service-minded staff.
• Second Law: Every reader his or her book – implies State obligation (library legislation, free service), balanced selection, reference service, services for all groups including persons with disabilities.
• Third Law: Every book its reader – implies open access, classification, a good catalogue, publicity, displays, extension service.
• Fourth Law: Save the time of the reader – implies classified shelving, OPAC, fast charging/discharging, reference service, document delivery; corollary "save the time of the staff".
• Fifth Law: A library is a growing organism – growth in books, readers and staff; modular building; hospitable classification; weeding and relegation.
• Child growth vs adult growth – increase in overall size vs replacement of parts at constant size (fifth law).
• Normative principles – the laws are first principles from which fundamental and practical laws of library science are derived; they are not enforceable statutes.
• National Librarian's Day – 12 August, Ranganathan's birthday; he was honoured with the Padma Shri in 1957.
• Open access – the single practice that satisfies the first, third and fourth laws together.
• Hospitality – the fifth law's demand on classification; met by analytico-synthetic schemes such as Colon Classification with its PMEST facets.
• Library legislation in India – a State subject; Tamil Nadu 1948 was the first Act; about 19–20 States/UTs have one; RRRLF (1972) funds public libraries.
• Delivery of Books Act, 1954 – legal deposit of one copy each to the National Library and three other designated public libraries.
• Michael Gorman (1995) – *Five New Laws of Librarianship*, the best-known modern restatement.
• Criticism – unquantifiable, "book"-centred, silent on cost and copyright, and in tension with conservation of rare material.
• Digital restatement – replace "book" with "information resource" and "reader" with "user"; justifies NDLI, e-ShodhSindhu, discovery layers and remote access.
• Exam habit – never state a law without two or three of its implications; that is where the marks are.

Formulas and examples

Example 1 — Fifth Law applied to stack planning. A college library has 48,000 volumes, adds 3,000 a year and weeds 500 a year. Plan the stack for the next 10 years at 30 volumes per metre of shelf, with 7 shelves per single-faced press of 0.9 m width.

• Net annual growth = 3,000 − 500 = 2,500 volumes/year.
• Stock after 10 years = 48,000 + 10 × 2,500 = 73,000 volumes.
• Additional volumes to house = 73,000 − 48,000 = 25,000.
• Extra shelf length = 25,000 ÷ 30 ≈ 833 m.
• Capacity of one press = 7 × 0.9 × 30 = 189 volumes… in length terms, one press gives 7 × 0.9 = 6.3 m of shelving.
• Presses needed = 833 ÷ 6.3 ≈ 133 single-faced presses (≈ 67 double-faced stacks). This is the quantitative form of "a library is a growing organism" — and the reason the building must be modular.

Example 2 — Fourth Law, measuring saved time. A university library issues 1,200 books a day. With the manual Browne system each issue takes 55 seconds; after bar-code circulation it takes 12 seconds.

• Manual time per day = 1,200 × 55 = 66,000 s = 18 h 20 min of counter work.
• Bar-code time = 1,200 × 12 = 14,400 s = 4 h 0 min.
• Time saved per day = 51,600 s ≈ 14 h 20 min; reader waiting falls by 43 s per transaction.
• Over 300 working days the saving is 51,600 × 300 = 15,480,000 s ≈ 4,300 hours, i.e. about two full staff-years of 2,150 h — the Fourth Law expressed as a staffing argument.

Example 3 — Second Law, selection budget across reader groups. A district public library has a book grant of ₹6,00,000 and must serve 4 reader groups in proportion to registered membership: adults general 45%, students 30%, children 15%, neo-literates and regional-language readers 10%.

• Adults: 0.45 × 6,00,000 = ₹2,70,000; Students: 0.30 × 6,00,000 = ₹1,80,000; Children: 0.15 × 6,00,000 = ₹90,000; Neo-literates/regional: 0.10 × 6,00,000 = ₹60,000. Total = ₹6,00,000. ✔
• At an average price of ₹400 per volume the library buys 6,00,000 ÷ 400 = 1,500 volumes, of which 225 are children's books — the Second Law turned into a purchase order.

Example 4 — Third Law, measuring dead stock. Of 48,000 volumes, 9,600 were not issued even once in 5 years.

• Dead-stock proportion = 9,600 ÷ 48,000 = 20%.
• After moving them from closed stack to open-access display shelves, 2,880 circulated in the next year.
• Recovery = 2,880 ÷ 9,600 = 30% of the dead stock activated; remaining dead stock = 6,720 = 14% of the collection — direct evidence for the Third Law's demand for open access and publicity.

Example 5 — First Law, use per volume. Library A: 20,000 volumes, 40,000 issues a year. Library B: 50,000 volumes, 45,000 issues a year.

• Turnover (issues per volume) = A: 40,000 ÷ 20,000 = 2.0; B: 45,000 ÷ 50,000 = 0.9.
• Library A's smaller collection is used more than twice as intensively per volume, so by the First Law A's collection is better matched to its readers, even though B is larger. Size is not service.

Where it is used

• Academic libraries (IITs, NITs, central and state universities, affiliated colleges): the laws are the stated basis of open-access stacks, extended exam-time hours, user-orientation programmes and NAAC/NIRF library criteria on usage and per-student spend.
• Public library systems funded through State Library Acts and RRRLF: library cess collection, mobile library vans, children's corners and neo-literate collections are all second-law arguments in project proposals.
• Special and corporate libraries (DRDO, ISRO, CSIR labs, BARC, RBI, Parliament Library, TCS/Infosys knowledge centres): CAS/SDI alerts, document delivery and current-awareness bulletins are fourth-law and third-law services.
• School libraries under CBSE/KVS/NVS norms and NEP 2020's reading-culture push: graded readers and story hours apply the second law to children.
• Job roles that are examined on it: Library Trainee and Library Assistant (KVS, NVS, DRDO, ISRO, IITs), Semi-Professional Assistant, Assistant Librarian / Deputy Librarian / University Librarian (UGC-NET and UGC Regulations qualifications), Library Automation Executive, metadata and knowledge-management roles.
• System design and automation: vendor and in-house LMS work (Koha, SOUL 2.0 from INFLIBNET, e-Granthalaya, LibSys) — RFID self-issue, web OPAC and discovery layers are justified in tenders by the fourth and fifth laws.

Interview questions

• Q: Who formulated the Five Laws of Library Science and when? A: Dr S. R. Ranganathan, published in *The Five Laws of Library Science* in 1931; a second edition appeared in 1957.
• Q: State the five laws in order. A: Books are for use; every reader his or her book; every book its reader; save the time of the reader; a library is a growing organism.
• Q: Why are they called "laws" when they cannot be enforced? A: They are normative principles — first principles from which practical rules are derived and against which decisions are judged, in the sense of a scientific law rather than a statute.
• Q: Which single practice satisfies three laws at once? A: Open access to the stacks: it puts books to use (Law 1), lets each book meet a reader (Law 3) and saves the reader's time in locating material (Law 4).
• Q: What is the difference between the second and third laws? A: The second looks from the reader's side — every reader must get suitable material; the third looks from the book's side — every item must find the reader who needs it.
• Q: Explain child growth and adult growth under the fifth law. A: Child growth is an increase in total size (a young library adding stock, readers and space); adult growth is replacement at a roughly constant size, where weeding and relegation balance additions.
• Q: How does the fifth law affect the choice of a classification scheme? A: It demands hospitality — room for new subjects in array and in chain — which is why an analytico-synthetic scheme like Colon Classification suits a growing library better than a purely enumerative one.
• Q: Does any law support weeding, which removes books from use? A: Yes, the fifth law: an organism sheds dead matter, so obsolete and unused stock is weeded or relegated to keep the live collection usable.
• Q: Give one conflict between the laws. A: Law 1 (books are for use) conflicts with conservation of rare or fragile material; libraries resolve it by restricted consultation plus digitised surrogates, which keep the content in use.
• Q: How would you restate the laws for a digital library? A: Replace "book" with "information resource" and "reader" with "user": resources are for use, every user their information, every resource its user, save the time of the user, a digital library is a growing organism.
• Q: Who proposed the "Five New Laws of Librarianship" and what is one of them? A: Michael Gorman, 1995; for example "use technology intelligently to enhance service" and "protect free access to knowledge".
• Q: Which law justifies library legislation and a library cess? A: The second law — providing every reader with the right material is an obligation of the State, which requires an Act, funding and free service.
• Q: Name two of Ranganathan's other contributions that rest on these laws. A: Colon Classification (1933) with the PMEST facet formula, and the Classified Catalogue Code (1934) with chain procedure for subject headings.

Common mistakes

• Reciting the five laws without their implications — a 10- or 15-mark question expects the obligations on the State, the authority, the staff and the reader, not just the five sentences.
• Confusing Law 2 with Law 3; remember Law 2 is the reader's claim on the collection and Law 3 is the book's claim on the readership.
• Attributing the "sixth law" ("every reader his freedom") or "save the time of the staff" to Ranganathan himself — these are later proposals, and marks are lost for stating them as original.
• Giving 1931 as the date of Colon Classification; 1931 is the Five Laws, 1933 is the first edition of Colon Classification and 1934 the CCC.
• Claiming a central Indian Public Libraries Act exists — public libraries are a State subject; Tamil Nadu's 1948 Act was the first, and roughly 19–20 States/UTs have their own.
• Treating the fifth law as being only about more books; it covers readers and staff too, and equally covers weeding, relegation and format change.
• Writing "Every reader his book" and then arguing for restricted access or closed stacks in the same answer — the laws must be applied consistently.

Related topics

Library management and administration · Collection development and acquisition · Library classification: DDC, UDC and Colon Classification · Cataloguing: AACR-2, RDA and the Classified Catalogue Code · Library legislation and public library system in India · Library automation, Koha/SOUL and digital libraries