Mineral matter in coal

Author:	Sprunk, George C,
Additional Authors:	O'Donnell, Hugh J.,
Year:	1942
Document Type:	USBM
Issuing Agency:	U.S. Govt. Print. Off., Bureau of Mines,
SUDOC:	I 28.7:648
Series:	Technical paper / United States. Bureau of Mines ;
Report Number:	648
Subjects:	Coal--Analysis
	Mineralogy
Link:	https://hdl.handle.net/2027/mdp.39015078485664