Columbia subject headings:
Darien--Economic conditions.
Darien--Social conditions.
Natural resources--Panama--Darien (Province)
Regional planning--Panama--Darien (Province)
Harvard subject headings:
Darien (Panama and Colombia)--Economic conditions.
Darien (Panama and Colombia)--Social conditions.
Natural resources--Darien (Panama and Colombia)
Regional planning--Darien (Panama and Colombia)
Princeton subject headings:
Darien (Panama : Province)--Economic conditions.
Darien (Panama : Province)--Social conditions.
Natural resources--Panama--Darien (Province).
Regional planning--Panama--Darien (Province).