00314nam a2200109Ia 4500008004100000082001900041100002600060245003800086260004800124300001000172650002200182140113s9999    xx            000 0 und d  a632.9:634.3 G6  a" Fawcett, Howard S."  aCitrus diseases and their control  b"New York : McGraw-hill book company, 1936"  a656p.  aCitrus - diseases