TY  - BOOK
AU  - Helpman,Elhanan
AU  - Krugman,Paul R.
TI  - Trade policy and market structure
SN  - 0262081822
PY  - 1989///
CY  - Cambridge
PB  - The Mit Press
KW  - International trade
KW  - Commercial policy
N1  - Includes bibliographies and index
ER  -