Matches in Library of Congress for { ?s ?p Petroleum industry and trade Political aspects Sudan.. }
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- 00376549 subject "Petroleum industry and trade Political aspects Sudan.".
- 2003405093 subject "Petroleum industry and trade Political aspects Sudan.".
- 2007330578 subject "Petroleum industry and trade Political aspects Sudan.".
- 83233482 subject "Petroleum industry and trade Political aspects Sudan.".
- 85981258%2F%2Fr883 subject "Petroleum industry and trade Political aspects Sudan.".
- 97960084 subject "Petroleum industry and trade Political aspects Sudan.".