Columbia subject headings:
Harvard subject headings:
Cannabis--Africa, Sub-Saharan--History.
Smoking--Africa, Sub-Saharan--History.
Tobacco pipes--Africa, Sub-Saharan--History.
Tobacco--Africa, Sub-Saharan--History.
Princeton subject headings:
Africa, Sub-Saharan--Social life and customs.
Cannabis--Africa, Sub-Saharan--History.
Tobacco pipes--Africa, Sub-Saharan--History.
Tobacco use--Africa, Sub-Saharan--History.