Columbia subject headings:
Africa--Languages.
African languages.
Communication and culture.
Language and languages.
Harvard subject headings:
Africa--Languages--Congresses.
African languages--Congresses.
Communication and culture--Africa--Congresses.
Language and languages--Congresses
Reh, Mechthild
Princeton subject headings:
Africa--Languages.
African languages.
Communication and culture.
Language and languages.
Reh, Mechthild