00640nam a2200181Ia 4500082002200000100001700022245010100039260004700140300001500187490006600202500000500268690000600273700003000279952010500309964001700414921001000431999001700441  a338.16330954552b  aSingh, J. P.  aProspects of changing croppings pattern in favour of oilseeds and pulses in Punjab and Haryanab  aDelhibAgro Economic Research Centrec1989  avii, 219p.  aAgricultural Economics Research Centre, research studyv 89/1  a  a   aAERC, University of Delhi  001040708GRaISIbISId1998-09-25l0o338.16330954552pG1041r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a13955  c13955d13955