00401nam a2200133Ia 4500008004100000082001700041100002000058245004000078260005100118300000800169650004100177650003400218653001500252170901s1975    xx            000 0 und d  a632.95bW19P  aWare, George W. 0aPesticidebAn Autotutorial Approach  aSan FranciscobW. H. Freeman and Companyc1975  a191  aAgriculture and related technologies  aTechnology (Applied sciences)  aPesticides