Columbia subject headings:
Plants, Useful--Africa, Southern--Identification.
Plants, Useful--Africa, Southern--Pictorial works.
Harvard subject headings:
Botany, Economic--Africa, Southern.
Plants, Useful--Africa, Southern--Handbooks, manuals, etc.
Plants, Useful--Africa, Southern--Identification.
Plants, Useful--Africa, Southern--Pictorial works.
Plants--Africa, Southern.
Princeton subject headings:
Plants, Useful--Africa, Southern--Identification.
Plants, Useful--Africa, Southern--Pictorial works.