00491nam a2200169Ia 4500082002800000100002200028245005200050260002900102300002300131500000500154690000600159700000500165952011000170964001700280921000900297999001500306  a382.015157821bSg522.TD  aSgro, Pasquale M.  aThe theory of duality and international tradeb  aLondonbCroom-Helmc1986  a370p. Index, Bibl.  a  a   a  00104070aISIbISId1998-09-03l0o382.015157821 Sg522.TDpDP20686r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a8109  c8109d8109