TY  - BOOK
AU  - Helpman,Elhanan
AU  - Krugman,Paul R.
TI  - Market structure and foreign trade: increasing returns, imperfect competition, and the international economy 
SN  - 0-262-08150-4
AV  - HF1412 H45
PY  - 1985///
N1  - Incluye bibliografia
ER  -