Analyses of Washington Coals: Supplement to Technical Paper 491

Author:	Yancey, H. F.
Year:	1941
Document Type:	N/A
SUDOC:	I 28.7:618
Series:	Technical paper (United States. Bureau of Mines)
Report Number:	Technical Paper 618
Subjects:	Coal -- Analysis.
	Coal -- Washington (State)
Link:	http://digital.library.unt.edu/ark:/67531/metadc66439/