http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Minerals and metals of increasing interest
Supersedes Arizona Bureau of Mines Circular number13, "Radioactive uranium and thorium," by J.W. Anthony, and includes several metals which were not covered in Circular number13.
University of Arizona bulletin, v.24, no.4, Oct.1953
Bulletin (Arizona Geological Survey) ; no. 163
Bulletin (Arizona Geological Survey). no. 47