A. S. Sandhu and T.S. Sohal. An Appraisal of the Knowledge of Block Extension Staff about Extension Programme Planning. Indian J Ext Edu [Internet]. 1965 Dec. 1 [cited 2025 Oct. 21];1(3):149-58. Available from: https://epubs.icar.org.in/index.php/IJEE/article/view/159610