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 /

Autor Gray, Floyd, Tosdal, Richard Mark, Peterson, Jocelyn A., Cox, Dennis P., Miller, Robert J., Klein, Douglas P., Theobald, P. K. 1928-2005, Haxel, Gordon, Grubensky, Michael, Raines, Gary, Barton, Harlan N., Singer, Donald A., Eppinger, R. G.
Vydáno 1992