Annual report of research and technologic work on coal :fiscal year 1947

Author:	Fieldner, Arno Carl,
Additional Authors:	Ambrose, P. M.
Year:	1948
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7446
Series:	Information circular / Bureau of Mines ;
Report Number:	7446
Subjects:	Coal
	Coal mines and mining--United States
Link:	https://hdl.handle.net/2027/mdp.39015077577792