00498nam a2200121Ia 450000500170000008000180001710000270003524500550006226000310011730000100014852001990015858300190035720260716043146.0  a09.05.07 C533  aChichilnisky, Graciela  aStategies for trade liberalization in the Americas  bUN ECLACaSantiagoCLc1992  a26 p.  aReviews the existing economics of trading blocks and presents a new conceptual approach to the economics of preferential trade. Looks at NAFTA, an American free trade zone and global free trade.  c3/7/00kM2LMGR