TY  - BOOK
AU  - Helpman, Elhanan
AU  - Krugman,Paul R. 
TI  - Trade policy and market structure
SN  - 0262081822
U1  - 382.3 
PY  - 1989///
CY  - Cambridge
PB  - MIT Press
KW  - International Trade
N1  - Includes bibliographical references and index
ER  -