00291nam a2200109Ia 4500008004100000082002000041100002200061245003400083260002000117300001000137650003400147140113s9999 xx 000 0 und d a632.4:633.74 L4 a" Gregory, P. H." aPhytophthora disease of cocoa b"Longman, 1974" a348p. aCocoa - Phytoophthora disease