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American Association of Petroleum Geologists
American Association of Petroleum Geologists
American Institute Of Chemical Engineers
The American Chemical Society
Elsevier Science Publisher
American Chemical Society
Published Biweekly by The American Chemical Society
The Society Petroleum Engineers
Elsevier Scientific Publishing CO
American Association of Petroleum Geologists.
The American Society of Mechanical Engineers
American Musium Of Natural History
Blackwell Energy Research
