Siyali Ramamrita Ranganathan (12 August 1892 – 27 September 1972)
12th August is celebrated as Librarians’ Day as it is the Birth Day of the Father of Library Science of India : Dr. S.R.Ranganathan.He was a University Librarian and Professor of library science at Banaras Hindu University (1945-47) and professor of library science at University of Delhi (1947-55). He was President of Indian Library Association from 1944 to 1953.
The most notable contributions to the field of Library Science is ‘Five Laws of Library Science” , “colon classification”, etc. He developed the modern concept of Readers’ service that is the main purpose of a Library.