000 00317nam a2200121Ia 4500
008 190415s9999 xx 000 0 und d
082 _aRG.0067
100 _aGupta, L.N.
245 0 _aImpact of improved agricultural practices on agricultural efficiency in eastern
260 _c1974
300 _a58p.
942 _cBK
999 _c15109
_d15109