Annual report of research and technologic work on coal, fiscal year 1949
By: by Arno C. Fieldner and Sidney Gottlieb.
Contributors: Gottlieb, Sidney.; United States. Bureau of Mines.
Series: Information circular (United States. Bureau of Mines) -- 7565
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1950
Place of publication: Washington, DC
Language: eng
Number of pages: 97
Subjects: Coal -- Research.; Coal mines and mining -- United States.
Notes: Bibliogr.

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