Facts about coal
By: Allan Sherman & Allen B. MacMurphy
Contributors: MacMurphy, Allen B.; United States. Bureau of Mines
Publisher: U.S. Department of the Interior, Bureau of Mines; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1950
Place of publication: Washington]
Language: eng
Number of pages: 26
Subjects: Coal; Coal mines and mining
Other titles: Coal
Notes: Includes bibliographical references.
Table of contents: title: pt. 1. Origin, nature, and uses.; title: pt. 2. Mining and preparation.