Columbia subject headings:
Economic development--Social aspects--Case studies.
Plantations--Colombia--Cauca River Valley.
Superstition--Case studies.
Tin mines and mining--Bolivia.
Harvard subject headings:
Economic development--Social aspects--Case studies.
Plantations--Colombia--Cauca River Valley.
Superstition--Case studies.
Tin mines and mining--Bolivia.
Princeton subject headings:
Economic development--Social aspects--Case studies.
Plantations--Colombia--Cauca Valley.
Superstition--Case studies.
Tin mines and mining--Bolivia.