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2
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The case of Aba and its region : southeastern Nigeria / by David Okali, Enoch Okpara and Janice Olawoye.
- International institute for environment and development (IIED),
- 2001.
- London :
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Le Sahel : une dégradation des terres exagérée, un potentiel paysan sous-estimé / Valentina Mazzucato et David Niemeijer.
- International institute for environment and development (IIED),
- 2001.
- London :