Columbia subject headings:
Democracy--Nigeria--Congresses.
Ethnicity--Nigeria--Congresses.
Freedom of the press--Nigeria--Congresses.
Press and politics--Nigeria--Congresses.
Harvard subject headings:
Democracy--Nigeria--Congresses
Ethnicity--Nigeria--Congresses.
Freedom of the press--Nigeria--Congresses.
Press and politics--Nigeria--Congresses.
Princeton subject headings: