00554nam a2200181Ia 4500008004100000082001400041100002000055245008200075250000600157260006000163300000800223650004100231650003400272653001800306653001200324653001900336700001700355170901s1991    xx            000 0 und d  a632bS28B  aSen, Chitreswar 0aBiotechnology in Crop ProtectionbA Selection of Symposium and Invited Papers  a1  aWest BangalbBidhan Chandra Krishi Vishwavidyalayc1991  a292  aAgriculture and related technologies  aTechnology (Applied sciences)  aBiotechnology  aControl  aPlant diseases  aDatta, Sunil