University of Arizona. Bureau of Geology and Mineral Technology & Welty, J. W. (1985). Ore grades for metallic mineral districts of Arizona. [publisher not identified].
Chicago Style (17th ed.) CitationUniversity of Arizona. Bureau of Geology and Mineral Technology and John W. Welty. Ore Grades for Metallic Mineral Districts of Arizona. [Tucson, Ariz. : Bureau of Geology and Mineral Technology, State of Arizona]: [publisher not identified], 1985.
MLA (9th ed.) CitationUniversity of Arizona. Bureau of Geology and Mineral Technology and John W. Welty. Ore Grades for Metallic Mineral Districts of Arizona. [publisher not identified], 1985.
Warning: These citations may not always be 100% accurate.