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An exploratory study of land use, management and degradation : West Malombe catchment, Mangochi RDP, Malawi / Welbon Mcrodger Kasweswe Mwafongo.
- OSSREA,
- 2000.
- Addis Ababa :
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The dynamics of rural change in dry agriculture in Sudan : case study from southern Kordofan / Kabbashi Medani Suliman.
- OSSREA,
- 2000.
- Addis Ababa :