Title Geology of the Bighorn Cayon-Hardin area, Montana and Wyoming Geological Survey Bulletin 1026
Publisher Washington DC Department of the Interior 1955
Seller ID 17378
Octavo (23 cm), pp. 93.Gray-green wrappers, includes black and white photos, eight figures, four tables,and index. Rear pocket holds all seven plates in immaculate condition. Former owner's name stamped and written on title page, wrappers have edge wear with small, closed tears.