Éditeur(s) : Agricultural Science and Technology InstituteAgricultural Science and Technology Institute ( Guatemala ) Résumé : (Statement of Responsibility) Astolfo Fumagalli, Robert K. Waugh. "Presented at the Bellagio Conference, October 1977, Bellagio, Italia." Cover title. (Funding) Electronic resources created as part of a prototype UF Institutional Repository and Faculty Papers project by the University of Florida. Guatemala Guatemala