five laws of library science

His most notable contributions to the field were his five laws of library science and the development of the first major analytico-synthetic classification system, the Colon classification.

The Five laws of library science is a theory proposed by S. R. Ranganathan in 1931, detailing the principles of operating a library system.

It was during this period that he produced what have come to be known as his two greatest legacies: his five laws of library science (1931) and the colon classification system (1933).