Columbia subject headings:
Watershed ecology--Africa, East.
Watershed management--Africa, Southern.
Wetland ecology--Africa, Southern.
Wetland management--Africa, East.
Harvard subject headings:
Watershed ecology--Africa, East.
Watershed management--Africa, Southern.
Wetland ecology--Africa, Southern.
Wetland management--Africa, East.
Princeton subject headings:
Water-supply--Africa, East.
Water-supply--Africa, Southern.
Watershed management--Africa, East.
Watershed management--Africa, Southern.
Wetland management--Africa, East.
Wetland management--Africa, Southern.