Editore: Laramie, WY, 1980
Da: Walkabout Books, ABAA, Curtis, WA, U.S.A.
Prima edizione
Soft cover. Condizione: Very Good. First Edition. 4to - over 9 3/4 - 12" tall. 188 pp, illustrated with maps and tables, large folding map in a rear pocket. Papers on the following: Regional depositional framework of the Unranium and Coal-bearing Wasatch and Fort Union formations; Lake de Smet Coal Seam; Fluvial coal settings of the Tongue River member of the Fort Union formation; chemical and petrographic characteristics of Powder River Basin coals; Rawhide Coal Mine, Campbell County, WY.