J.S. MATHI, T. S. SOHAL AND R. K. GUPTA. KNOWLEDGE AND OPINION OF EXTENSION PERSONNEL TOWARDS EFFECTIVENESS OF FARM  ADVISORY SERVICE OF PUNJAB AGRICULTURAL UNIVERSITY, LUDHIANA IN DEVELOPMENTAL PROGRAMMES OF AGRICULTURE. Indian J Ext Edu [Internet]. 2024 Nov. 21 [cited 2025 Oct. 23];9(3&4). Available from: https://epubs.icar.org.in/index.php/IJEE/article/view/160371