Annual report of research and technologic work on coal, fiscal year 1950
By: by Arno C. Fieldner and Sidney Gottley.
Contributors: Gottley, Sidney.; United States. Bureau of Mines.
Series: Information circular (United States. Bureau of Mines) -- 7618
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1951
Place of publication: Washington, DC
Language: eng
Number of pages: 80
Subjects: Coal -- Research.; Coal -- United States.
Notes: Bibliogr.

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