Columbia subject headings:
Labor unions--Africa--Handbooks, manuals, etc.
Working class--Africa--Handbooks, manuals, etc.
Harvard subject headings:
Labor unions--Africa--Handbooks, manuals, etc.
Labor--Africa--Handbooks, manuals, etc.
Working class--Africa--Handbooks, manuals, etc.
Princeton subject headings:
Labor unions--Africa--Handbooks, manuals, etc.
Working class--Africa--Handbooks, manuals, etc.