OPEC bulletin.

Dades bibliogràfiques
Autor corporatiu:	Organization of Petroleum Exporting Countries
Format:	Continuing Resource
Idioma:	English
Publicat:	Vienna Organization of the Petroleum Exporting Countries Austria
Matèries:	Organization of Petroleum Exporting Countries > Periodicals. Petroleum industry and trade > Periodicals. Organization of Petroleum Exporting Countries.