000 00308nam a2200109Ia 4500
008 160214s9999 xx 000 0 und d
100 _aPal, Mahendra [et al.]
245 _aEnergetics of cropping systems
260 _c1985
_aNew Delhi
_bIndian Society of Agronomy (ICAR)
300 _a61p.
942 _2udc
_cICAR
999 _c30461
_d30461