00962 #a2200445 #4500 aLibros aC 20140826164027.0 am a Shenk, M.D. Saunders, J.L 24 En CATIE-SC (4122) Symposium on No-tillage crop production in the tropics Vegetation management systems for crop production in tropical regions of Central America: the case of Costa Rica Costa Rica 1981 CATIE Cultivo intercalado Energía Herbicidas Limón, Costa Rica Maíz Zea mays Sistemas de cultivo 3800 3800