Beryl Resources of the Black Hills of South Dakota

Author:	Tullis, Edward L.
Year:	1952
Document Type:	N/A
Series:	United States Bureau of Mines Reports
Report Number:	R. I. 4855
Subjects:	Beryl.
	Pegmatites.
Link:	http://digital.library.unt.edu/ark:/67531/metadc38576/