Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1971. Softcover. Item #46756
A subsurface and surface study of the coal-bearing Fruitland Formation, the Kirtland Shale, and associated rocks, with emphasis on the relation between regional stratigraphy and the distribution, thickness, and quality of coal. 76 pages with maps, photographs, tables, graphs, bibliography and index, plus the three folded plates in the rear pocket. Bound in original stiff gray paper printed in black. A near fine copy.