Preparation Characteristics of Illinois Coals

Author:	Crentz, William L.
Year:	1949
Document Type:	N/A
SUDOC:	I 28.7:724
Series:	Technical paper (United States. Bureau of Mines)
Report Number:	Technical Paper 724
Subjects:	Coal -- Illinois.
	Coal preparation.
Link:	http://digital.library.unt.edu/ark:/67531/metadc66477/