Twenty years of soil conservation in eastern Africa /
Lill Lundgren.
- Nairobi : Regional Soil Conservation Unit, Swedish International Development Authority, 1993.
- viii, 50 p. : ill. (some col.), map ; 30 cm.
- Report / Regional Soil Conservation Unit ; no. 9 .
- Report (Sweden. Regionala markvårdsenheten) ; no. 9. .