00469nam a2200169Ia 4500082002100000100002000021245003600041260004800077300001500125500000500140690000600145700000500151952010200156964001700258921000900275999001500284  a330.155bG726.TW  aGraaf, J. de V.  aTheoretical welfare economicsb  aCambridgebCambridge University Pressc1967  axii, 178p.  a  a   a  00104070aISIbISId1998-06-12l0o330.155 G726.TWpDP2671r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a2497  c2497d2497