Columbia subject headings:
Copper mines and mining--Zambia.
Industries--Zambia.
Missions--Zambia.
Zambia--Social conditions.
Harvard subject headings:
Copper mines and mining--Zambia
Industries--Zambia.
Missions--Zambia
Zambia--Social conditions
Princeton subject headings:
Copper mines and mining--Zambia.
Industries--Zambia.
Missions--Zambia.
Zambia--Social conditions.