Microscopic study of Elkhorn coal bed at Jenkins, Letcher county, Ky.

Author:	Thiessen, Reinhardt,
Additional Authors:	Sprunk, G. C., O'Donnell, Hugh J.,
Year:	1931
Document Type:	USBM
Issuing Agency:	U.S.Bureau of Mines,
SUDOC:	C 22.5:506
Series:	Technical paper / United States. Bureau of Mines ;
Report Number:	506.
Subjects:	Microscopy
	Coal--Kentucky--Letcher County
Link:	https://hdl.handle.net/2027/mdp.39015077559790