Research and progress in the production and use of coal
By: by A.C. Fieldner and W.E. Rice.
Contributors: Fieldner, A. C. 1881-; Rice, William Elmer, 1897-
Series: [U.S.] National Resources Planning Board. Technical paper,; no. 4
Publisher: U.S. Govt. Print. Off.]
Published: 1941
Place of publication: [Washington
Language: eng
Number of pages: 49
Subjects: Coal; Coal mines and mining
Notes: Prepared by the Bureau of Mines. cf. p. iv.