The production and use of brown coal in the vicinity of Cologne, Germany

Author:	Davis, Charles Albert,
Year:	1913
Document Type:	USBM
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.7:55
Series:	Technical paper / United States Department of the Interior, Bureau of Mines ;
Report Number:	55
Subjects:	Lignite--Germany--Cologne Region
	Lignite industry--Germany--Cologne Region
	Coal mines and mining--Germany--Cologne Region
	Briquets (Fuel) industry--Germany--Cologne Region
Link:	https://hdl.handle.net/2027/mdp.39015077561044