00518nam a2200169Ia 4500082002300000100002400023245009700047260002700144300001500171500000500186690000600191700000500197952010500202964001700307921000900324999001500333  a338.10954bM953.SY  aMukhopadhyay, S. K.  aSources of varition in Agricultural productivityba cross section time-series study in India  aDelhibMacmillanc1976  axii, 121p.  a  a   a  00104070aISIbISId1998-08-19l0o338.10954 M953.SYpDP10773r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a4943  c4943d4943