TY  - BOOK
AU  - Sgro Pasquale M
TI  - Theory of duality and international trade
SN  - 070993307x
U1  - "X:54, M6/TD3" 
PY  - 1986///
CY  - London
PB  - Croom-Helm UK      
KW  - Export
N1  - Bibliography p 288-99; Appendix chapterwise
ER  -