Rare and uncommon chemical elements in coal

Author:	Gibson, F. H.
Additional Authors:	Selvig, W. A.
Year:	1944
Document Type:	USBM
Issuing Agency:	U.S. Govt. Print. Off., Bureau of Mines,
SUDOC:	I 28.7:669
Series:	Technical paper / United States. Bureau of Mines ;
Report Number:	669
Subject:	Coal--Analysis
Link:	https://hdl.handle.net/2027/mdp.39015078485623