Washington DC: Government Printing Office, 1959. Paperback. 125pp. Quarto [29 cm] Light gray and black printed wraps. Good only. There is a former owner's name on the front wrap. The rear wrap with the maps and pocket, is detached, but present. The corners of the covers and pages are slightly bumped. The spine and edges of the wraps are slightly darkened. The top and bottom margins of the pages are moisture stained. The pages at the beginning of the text are a bit more moisture stained than the others. The pages at the end of the text have several tiny closed tears in the edges. Item #28054
Complete, with 4 maps in the rear pocket. A report on fieldwork and available data on the geologic, structural, and geomorphic studies of the rocks, ranging from Precambrian to Recent in age, in two adjacent mountainous regions of Montana.