J.S. MATHI, T. S. SOHAL AND R. K. GUPTA 2024. KNOWLEDGE AND OPINION OF EXTENSION PERSONNEL TOWARDS EFFECTIVENESS OF FARM  ADVISORY SERVICE OF PUNJAB AGRICULTURAL UNIVERSITY, LUDHIANA IN DEVELOPMENTAL PROGRAMMES OF AGRICULTURE. Indian Journal of Extension Education. 9, 3&4 (Nov. 2024). DOI:https://doi.org/10.48165/.