00406    a2200157   4500020001800000082001300018100002100031245004500052250000900097260004200106300001600148650002800164650001400192700002200206700002000228  a9780273754091  a337bKRU  aKrugman, Paul R.  aInternational economicsbtheory & policy  a9th.  aBostonbPearson Educationc2012g2012  a731p.c25cm  aINTERNATIONAL ECONOMICS  aECONOMICS  aObstfeld, Maurice  aMelitz, Marc J.