00269nam a2200097Ia 4500008004100000082001700041100003100058245004100089260003300130300000800163140113s9999    xx            000 0 und d  a632(02)   J3  aU.S.(Dept. of Agriculture)  aPlant Diseases :Year book of agric.   a1953bOxford & IBHcCalcutta  a940