Columbia subject headings:
Human geography--Congo (Democratic Republic)--Monts Bleus.
Monts Bleus (Congo)--Economic conditions.
Harvard subject headings:
Human geography--Congo (Democratic Republic)--Monts Bleus.
Monts Bleus (Zaire)--Economic conditions.
Monts Bleus, Congo--Economic conditions.
Princeton subject headings:
Human geography--Congo (Democratic Republic)--Monts Bleus.
Monts Bleus, Zaire--Economic conditions.