GUPTA, D. K. User-Focus Approach:Central to Ranganathan’s Philosophy. Journal of Information and Knowledge, [S. l.], v. 36, n. 2, p. 123–128, 1999. DOI: 10.17821/srels/1999/v36i2/94419. Disponível em: https://www.srels.org/index.php/sjim/article/view/94419. Acesso em: 16 nov. 2025.