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*1001 $aHallak, Juan Carlos$0(NO-TrBIB)4011934$_69535300
*24510$aProduct quality, linder, and the direction of trade$cJuan Carlos Hallak
*260  $aCambridge, Mass.$bNational Bureau of Economic Research$c2004
*300  $a34, [15] s.$btab.
*4901 $aWorking paper series / National Bureau of Economic Research$v10877
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