Published by United States Geological Survey, Washington, D. C., 1942
First Edition
Paperback. Condition: Very Good-. First Edition. Fold out. Unmarked. Crease on back top corner. ; Book Description; Spine has staples. Pages are clean and not marred by notes or folds. Covers are square with wear as noted. Ships Safe and Fast; U. S. Geological Survey Bulletin; Textbook; Vol. 931I; 8vo 8" - 9" tall; 205-226 pages DB6.
Published by Washington G P O, 1942
Seller: Antiquariat Hanfgarten, Heimiswil, CH, Switzerland
Softcover, III, pp. 205-226, 3 figures, 2 plates. Library stamps, otherwise good.