Annual report of research and technologic work on coal, fiscal year 1937

Author:	Fieldner, Arno Carl,
Year:	1938
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:6992
Series:	Information circular / Bureau of Mines ;
Report Number:	6992
Subjects:	Coal mines and mining--United States
	Coal
Link:	https://hdl.handle.net/2027/mdp.39015077575903