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An assessment of desertification and land degradation in arid and semi-arid areas / Andrew Warren and Clive Agnew.
- International institute for environment and development (IIED),
- 1988.
- London :
-
An assessment of desertification and land degradation in arid and semi-arid areas / Andrew Warren and Clive Agnew.
- International institute for environment and development (IIED),
- 1988.
- [London] :