00434nam a2200157Ia 4500008004100000082001700041100001700058245002100075260004900096300000800145650004100153650003400194653001200228653001900240700001700259170901s1968    xx            000 0 und d  a632.93bM52P  aMehta, P. R. 0aPlant Protection  aNew DelhibMinstry of Food Agriculturec1968  a587  aAgriculture and related technologies  aTechnology (Applied sciences)  aControl  aPlant diseases  aVarma, B. K.