00437nam a2200145Ia 4500008004100000082002100041100002400062245004200086260005100128300000700179650004100186650003400227653001000261653002000271170901s1990    xx            000 0 und d  a631.095412bS48B  aSingh, Bikram Kumar 0aBihar ke Tal Chetro ki Krishi Pranali  aPusabDirectorate of Extension Educationc1990  a26  aAgriculture and related technologies  aTechnology (Applied sciences)  aBihar  aFarming systems