Columbia subject headings:
Harvard subject headings:
Benin--Economic conditions--1960-1990--Periodicals.
Burkina Faso--Economic conditions--Periodicals.
Niger--Economic conditions--Periodicals.
Togo--Economic conditions--Periodicals.
Princeton subject headings:
Benin--Economic conditions--1960---Periodicals.
Burkina Faso--Economic conditions--Periodicals.
Niger--Economic conditions--Periodicals.
Togo--Economic conditions--Periodicals.