Columbia subject headings:
Harvard subject headings:
Rangi (African people)
Soil conservation--Tanzania--Kondoa District.
Soil erosion--Tanzania--Kondoa District.
Princeton subject headings:
Agriculture--Tanzania--Kondoa District.
Livestock--Tanzania--Kondoa District--Ecology.
Soil erosion--Economic aspects--Tanzania--Kondoa District.
Soil erosion--Tanzania--Kondoa District.