Wildcat Drilling in Illinois since 1936 with Discussion of Prospects for Further Discoveries and Table of Wildcat Wells Completed in 1942; ISGS il Petroleum Series No. 47

New (perfect condition)

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Very good (good condition)

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Good (clean condition)

All pages and the cover is intact. The spine may show signs of wear. Pages include notes and/or highlighting.

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All pages and the cover is intact. Pages include considerable notes in pen or highlighter, but the text is not obscured.