SINGH, K.; SINGH, N. Depth Schedule for Common Auxiliaries of Place in Universal Decimal Classification for Rendering Indian States and Districts. DESIDOC Journal of Library & Information Technology, [S. l.], v. 31, n. 6, 2011. DOI: 10.14429/djlit.31.6.1316. Disponível em: https://publications.drdo.gov.in/ojs/index.php/djlit/article/view/1316. Acesso em: 1 aug. 2025.