Item #48428 GEOLOGY OF NORTHEASTERN MONTANA: GEOLOGICAL SURVEY PROFESSIONAL PAPER 120-B. Arthur J. Collier.

GEOLOGY OF NORTHEASTERN MONTANA: GEOLOGICAL SURVEY PROFESSIONAL PAPER 120-B

Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1918. Soft cover. Item #48428

Pages 17 through 39 with five photographic plates and folded map bound in. Bound in original gray thick paper covers printed in black. Penciled notes to the top of the front cover. A very good plus copy.

Price: $20.00