Coal paleobotany / by Reinhardt Thiessen and George C. Sprunk.

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Bibliographic Details
Main Authors: Thiessen, Reinhardt, 1867-1938, Sprunk, G. C. (George C.), 1905-1995 (Author)
Corporate Author: United States. Bureau of Mines
Format: Government Document Book
Language:English
Published: Washington : U.S. Govt. Print. Off, 1941.
Series:Technical paper (United States. Bureau of Mines) ; 631.
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