00470nam a2200133Ia 4500008004100000020001500041082002100056100002100077245011700098260003100215300002100246500003900267700003000306260428b        |||||||| |||| 00| 0 eng d  a026258087X  a338.522bH483.MS  aHelpman, Alhanan  aMarket structure and foreign tradeb; increasing returns, imperfect competition, and the international economy /  aSussex:bWheatsheaf,c1985  axii, 271p. Index  a"1991 reprint pub. by the MIT Pr."  aKrugman, Paul R.eauthor.