Torthaí cuardaigh - "Organization of Petroleum Exporting Countries."

The great detente disaster oil and the decline of American foreign policy de réir Friedland, Edward

OPEC and the world oil market the genesis of the 1986 price crisis

A history of O.P.E.C de réir Rouhani, Fuad

OPEC uncertain about oil output

OPEC asked for investments

OPEC bulletin.

Aid from OPEC countries.

Oil, debt and development OPEC in the third world de réir Hallwood, Paul

Oil prices plunge to lowest since 2017, but exporters eye production cut vs glut.

Faigh an téacs iomlán

Oil, debt and development OPEC in the third world de réir Hallwood, Paul