An assessment of the professional competencies needed by agricultural extension agents in Costa Rica - Umaña Segura, Francisco José (San Ramón, [C.R.] : Biblioteca Sede Regional de Occidente, Universidad de Costa Rica, 1985)
Presentada originalmente como tesis del autor (Master of Science Iowa State University, 1984).
Fotocopia de: Ames, Iowa : Iowa State University, 1984.
Keywords: EXTENSION AGRICOLA