00348nam a2200121Ia 4500008004100000082001600041100002200057245004300079250001200122260004200134300001000176650004000186140113s9999    xx            000 0 und d  a632.35'4 F5  a" Whetzel, H. H."  aLaboratory outlines in plant pathology  a2nd Ed.  b"London : W.B.saunders company, 1925"  a231p.  aLaboratory manual - plant pathology