Columbia subject headings:
Debts, External--Nigeria--Congresses.
Nigeria--Economic conditions--1970---Congresses.
Nigeria--Economic policy--Congresses.
Harvard subject headings:
Debt--Nigeria--Congresses.
Debts, External--Nigeria--Congresses.
Nigeria--Economic conditions--1970---Congresses.
Nigeria--Economic conditions--Congresses.
Nigeria--Economic policy--Congresses.
Princeton subject headings: