Metwaly، M. M. (1988). PRICE ELASTICITY OF REMAND FOR OIL AND THE TERMS OF TRADE OF THE OPEC COUNTRIES. مجلة مصر المعاصرة، مج79, ع413,414 ، 195 - 211. مسترجع من http://search.mandumah.com/Record/663727
Metwaly، Mokhtar M. "PRICE ELASTICITY OF REMAND FOR OIL AND THE TERMS OF TRADE OF THE OPEC COUNTRIES." مجلة مصر المعاصرة مج79, ع413,414 (1988): 195 - 211. مسترجع من http://search.mandumah.com/Record/663727