00290nam a2200109Ia 4500008004100000082001500041100002500056245003600081260003100117300001000148650002200158140113s9999    xx            000 0 und d  a632.952 J6  a"Horsfall, James G."  aPrinciples of fungicidal action  b"USA : Waltham mass, 1956"  a279p.  aFungicidal action