000 00314nam a22001337a 4500
003 OSt
008 240214b |||||||| |||| 00| 0 eng d
082 _a631.5
_bD18H
100 _aDas Gupta,D.K.,ed.
245 _aHigher productivity in agriculture
260 _aNew Delhi
_c1980
300 _a178
942 _2ddc
_cBK
999 _c37052
_d37052