1 Assistant Professor, Dept. of Ag. Economics, Universidad Austral de Chile (UACh), Valdivia, Chile. 2 Boris E. Bravo-Ureta, Executive Director, Office of International Affairs and Professor of Ag. & Resource Economics, University of Connecticut, Storrs, CT, USA. 3 Amilcar Arzubi, Professor of Farm Management, Universidad de Lomas de Zamora, Buenos Aires, Argentina. 4 Ernesto Schilder, Economis...