Lorca, Lucía A., and Carlos Amtman. “ROLE PERCEPTION AND BEHAVIOR OF AGRICULTURAL, EXTENSION AGENTS WITHIN A PROVINCE OF SOUTHERN CHILE”. Agro sur 2, no. 2 (July 31, 1974): 41–44. Accessed July 1, 2024. http://revistas.uach.cl/index.php/agrosur/article/view/3729.