TY - RPRT TI - Map showing potential for copper deposits in the eastern three-quarters of the Nogales 2° quadrangle, Tucson area, Arizona AU - Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey PY - 1973 DO - 10.3133/i844g UR - https://pubs.usgs.gov/publication/i844G ID - i844G ER -