Columbia subject headings:
Harvard subject headings:
Mineral industries--Argentina--San Juan (Province)--History.
Mines and mineral resources--Argentina--San Juan (Province)--History.
Precious metals--Argentina--San Juan (Province)--History.
San Juan (Argentina : Province)--Biography.
Princeton subject headings:
Mineral industries--Argentina--San Juan (Province)--History.
Mines and mineral resources--Argentina--San Juan (Province)--History.
Precious metals--Argentina--San Juan (Province)--History.