00570nam a22001817a 4500020001800000082001900018100002100037245007500058260003100133300001900164650001700183650002200200650001400222700002000236942000700256952011000263999001500373  a9780262081822  a382.3  bHEL/T  aHelpman, Elhanan  aTrade policy and market structure/cElhanan Helpman and Paul R Krugman  aLondon:bMIT press,c1989.  a191p. ;b18cm.  aTrade Policy  aCommercial Policy  aMarketing  aKrugman, Paul R  cBK  001040708COMaMAINbMAINcCOMd2023-04-26l0o382.3   HEL/Tp2897r2023-04-26 00:00:00w2023-04-26yBK  c1709d1709