Columbia subject headings:
Collective bargaining--Africa--Congresses.
Industrial relations--Africa--Congresses.
Job security--Africa--Congresses.
Harvard subject headings:
Collective bargaining--Africa--Congresses.
Industrial relations--Africa--Congresses.
Job security--Africa--Congresses.
Princeton subject headings:
Collective bargaining--Africa--Congresses.
Industrial relations--Africa--Congresses.
Job security--Africa--Congresses.