00269nam a2200109Ia 4500008004100000082001900041100002000060245003600080260001600116300000900132650001800141140113s9999    xx            000 0 und d  a632(689.7)  J3  a" Wiehe, P. O."  aThe plant diseases of Nyasaland  b"CMI, 1953"  a39p.  aPlant disease