Distribution and Thickness of Devonian Rocks in Williston Basin and in Central Montana and North-Central Wyoming (Geological Survey Bulletin: 112-D)

Distribution and Thickness of Devonian Rocks in Williston Basin and in Central Montana and North-Central Wyoming (Geological Survey Bulletin: 112-D)

(Maps, charts, and a small booklet)

Multiple available.  May be an ex-library copy.  Good condition set of maps, charts, and a small booklet in a hardcover case.  Maps appear to be in great condition.  The booklet has very little wear, and there may be an ex-library stamp on the cover page, as well as some pencil marks.  Text throughout the booklet is clean, clear, and legible………………………….v1 Bx799