Washington, DC: United States Geological Survey/USGS/Government Printing Office/GPO, 1972. Softcover. Item #42175
Describes and interprets the results of a detailed subsurface mapping program. 79 page softcover book with references, plus all the required  folded plates. Book and plates are fine. All are housed within a very good cardboard slipcase. The slipcase shows signs of removal of a label from the front. [This is not an ex-library copy.].