Search Results       Your search for [subject]Petroleum -- North America returned 1 record.           Possible future oil provinces of the United States and Canada, a symposium conducted by the Research committee of the American association of petroleum geologists, A. I. Levorsen, chairman. Papers read at the twenty-sixth annual meeting of the Association Bulletin, August, 1941. Edited by A. I. Levorsen. Tulsa, Okl.: The American association of petroleum geologists, 1941. Subject: Petroleum -- North America; Geology -- North America; Geology, Structural.          Add to Book Cart Relevance: 17.64%