The Conterminous United States Mineral Assessment Program : background information to accompany folio of geologic, geochemical, geophysical, and mineral resource maps of the Ajo and Lukeville 1⁰ by 2⁰ quadrangles, Arizona /
Gray, Floyd.
Geological Survey (U.S.)
[Reston, Va.?] : U.S. Department of the Interior, U.S. Geological Survey ; Denver, CO : Books and Open-File Report Sales,
1992.
Shipping list no.: 92-0715-P.
Includes bibliographical references (p. 21-27).
Geology
Mines and mineral resources