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American oil diplomacy in the Persian Gulf and the Caspian Sea
Bahgat, Gawdat Gamil, (2003)
Turkey and Caspian energy
Winrow, Gareth M., (1999)
Problemy transportnoj infrastruktury i ėkologii v Kaspijskom regione : (dobyča i ėksportnye perevozki uglevodorodov)
Bystrova, A. K., (2009)