00354pab a2200121 454500008004000000100001500040245009500055260000900150300001300159362000800172650002500180773002700205180718b2003   xxu||||| |||| 00| 0 eng d  aChua, Swee  aDoes tighter environmental policy lead to a comparative advantage in less polluting goods?  c2003  ap.25-35.  aJan  aEnvironmental policy  aOxford Economic Papers