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Ground-water supplies and irrigation in San Pedro Valley, Arizona
1 online resource (167 pages, 2 unnumbered pages) : maps
by Kirk Bryan, G.E.P. Smith, and Gerald A. Waring.
"Released to the open file August 28, 1967."
San Pedro River Valley (Mexico and Ariz.)
Open-file report (Geological Survey (U.S.)) ; 67-31