Microscopic and petrographic studies of certain American coals,

Author:	Thiessen, Reinhardt,
Additional Authors:	Sprunk, George C.,
Year:	1935
Document Type:	USBM
Issuing Agency:	U.S.Bureau of Mines,
SUDOC:	I 28.7:564
Series:	Technical paper / United States. Bureau of Mines ;
Report Number:	564
Subjects:	Coal--United States
	Microscopy
	Microscopes
Link:	https://hdl.handle.net/2027/mdp.39015077565284