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Southwestern North America
Collects 23 technical papers examining the geology of porphyry copper deposits in the southwestern United States and adjoining regions in Mexico, pres...
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Papers Prepared for and Presented at the Regional Meeting of the A.I.M. & M.E. Held at Tucson, Arizona, Nov. 1-5, 1938
Part II
1848-1964
Shows location of small scale placer deposits in Arizona, listed by districts and by name within each gold-producing county, with history and producti...
United States Highway 666