Developments in coal research and technology in 1937 and 1938

Author:	Fieldner, Arno Carl,
Year:	1940
Document Type:	USBM
Issuing Agency:	U.S. Gov't Print. Off., Bureau of Mines,
SUDOC:	I 28.7:613
Series:	Technical paper / Bureau of Mines ;
Report Number:	613
Subjects:	Coal
	Research, Industrial
Link:	https://hdl.handle.net/2027/mdp.39015078485011