NDLTD Global ETD Search
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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.

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Showing 1 to 2 of 2 (0.102 seconds)

Spelling suggestions: "subject:"helvetia minining district (triz.)"" "subject:"helvetia minining district (ariz.)""

1

Geology of the King Mine, Helvetia, Arizona

Michel, Fred A., 1932- January 1959 (has links)
No description available.
Geology -- Arizona -- Pima County.
Helvetia Mining District (Ariz.)
maps
2

Geology of the Peach-Elgin copper deposit, Helvetia district, Arizona

Heyman, A. M. (Arthur Mark), 1929- January 1958 (has links)
No description available.
Geology -- Arizona -- Pima County.
Helvetia Mining District (Ariz.)

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