000 00358nam a2200145Ia 4500
020 _a8173410100
082 _a631.38/YAD
100 _aYadava, N D,et al
245 _aCropping system research in India-(1980-91)
260 _bIndian Publishers Distributor
_aDelhi
_c1994
300 _a263
650 _aCropping systems
901 _a3073
942 _2ddc
_cBK
999 _c2699
_d2699