The Occurrence of Gases in Coals

Author:	Selden, R. F.
Year:	1934
Document Type:	N/A
SUDOC:	I 28.23:3233
Series:	United States Bureau of Mines Reports
Report Number:	R. I. 3233
Subjects:	Gases.
	Coal.
Link:	http://digital.library.unt.edu/ark:/67531/metadc38398/