TY - RPRT TI - Report on the properties of the Amergosa Molybdenum and Copper Corporation, Pima County, Arizona AU - Charles A. Anderson AU - D.H. Kupfer PY - 1956 DO - 10.3133/ofr4550 UR - https://pubs.usgs.gov/publication/ofr4550 ID - ofr4550 ER -