Tucson: U.S. Bureau of Reclamation / U.S. Geological Survey, 1987. Paperback. 64pp. Quarto [28 cm] Stapled light gray and black printed covers. Good. There is a former owner's name in pen, along with an ink stamp, on the front cover. Underlining in pencil throughout. Item #35394
Prepared in cooperation with the U.S. Bureau of Reclamation.