Miranda Ch., R., Fernández A., F., & Vargas M., E. (1994). The incorporation of forestry extension in the training of forestry professionals at the National University, Costa Rica.

Miranda Ch., Rónald, Francisco Fernández A., und Emilio Vargas M. The Incorporation of Forestry Extension in the Training of Forestry Professionals At the National University, Costa Rica. 1994.

Miranda Ch., Rónald, Francisco Fernández A., und Emilio Vargas M. The Incorporation of Forestry Extension in the Training of Forestry Professionals At the National University, Costa Rica. 1994.