CIAT's strategic research for sustainable land management on the steep hillsides of Latin America - Amézquita Collazos, Edgar; Ashby, Jacqueline A.; Knapp, E.K.; Thomas, Richard J.; Müller-Sämann, Karl M.; Ravnborg, Helle Munk; Beltrán Giraldo, Jorge Alonso; Sanz Scovino, José Ignacio; Rao, Idupulapati M.; Barrios, Edmundo (CAB International, 1998)