Columbia subject headings:
Choco Hydraulic Mining Company.
Condoto (Colombia)--Social conditions.
Gold mines and mining--Colombia--Condoto.
Harvard subject headings:
Choco Hydraulic Mining Company.
Condoto (Colombia)--Social conditions.
Gold mines and mining--Colombia--Condoto.
Princeton subject headings:
Choco Hydraulic Mining Company
Condoto (Colombia)--Social conditions.
Gold mines and mining--Colombia--Condoto.