00461nam a2200169Ia 4500008004100000082001700041100001700058245002100075250000600096260005800102300000800160650004100168650003400209653001200243653001900255700001700274170901s1968 xx 000 0 und d a632.93bM52P aMehta, P. R. 0aPlant Protection a1 aNew DelhibMinstry of Food Agriculture communitc1968 a587 aAgriculture and related technologies aTechnology (Applied sciences) aControl aPlant diseases aVarma, B. K.