Inventory of significant mineral deposit occurrences in the Headwaters Project area in Idaho, western Montana, and extreme eastern Oregon and Washington /

by Spanski, G. T. (Gregory Thomas), 1939-
Published 2004

Inventory of mines and mining-related facilities in Idaho and western Montana active from 1997 through 2000 /

by Spanski, G. T. (Gregory Thomas), 1939-
Published 2001

Geology and mineral resource potential of the Chattanooga 1° x 2° quadrangle, Tennessee and North Carolina : a preliminary assessment /

by Clark, Sandra H. B., Hadley, Donald G., Hofstra, Albert H., Spanski, G. T. (Gregory Thomas), 1939-
Published 1993