Annual Report July 1990-June 1991 [of the National Coconut Development Programme]

beverage crops ciencia vegetal coco coconuts cocos nucifera coir collecte de semences control de enfermedades copra coprah cultivation cultivo disease control fibra del coco fibre crops fibre de coco noix de coco oil crops pest control methods plant sciences plantas oleaginosas plantas para bebidas plantas textiles pratique culturale seed collection tanzania tanzanie