A. S. SANDHU AND T.S. SOHAL. An Appraisal of the Knowledge of Block Extension Staff about Extension Programme Planning. Indian Journal of Extension Education, India, v. 1, n. 3, p. 149–158, 1965. DOI: 10.48165/. Disponível em: https://epubs.icar.org.in/index.php/IJEE/article/view/159610. Acesso em: 21 oct. 2025.