Columbia subject headings:
Archaeology--Mexico--Guanajuato (State)
Guanajuato (Mexico : State)--Antiquities.
Petroglyphs--Mexico--Guanajuato (State)
Harvard subject headings:
Excavations (Archaeology)--Mexico--Guanajuato (State)
Guanajuato (Mexico : State)--Antiquities.
Indians of Mexico--Mexico--Guanajuato (State)--Antiquities.
Petroglyphs--Mexico--Guanajuato (State)
Princeton subject headings:
Archaeology--Mexico--Guanajuato (State).
Cóporo Site (Mexico)
Guanajuato (Mexico : State)--Antiquities.
Petroglyphs--Mexico--Guanajuato (State).