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1by Engdahl, WilliamSubjects: “...Petroleum industry and trade Political aspects History....”
Published 1993
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2by Engdahl, WilliamSubjects: “...Petroleum industry and trade Political aspects History....”
Published 2004
Book -
3by Engdahl, WilliamSubjects: “...Petroleum industry and trade Political aspects. http://id.loc.gov/authorities/subjects/sh2008108983...”
Published 2012
Book