1. Counting the Costs and Benefits of Implementing multi-Country Collaborative Research Projects: The case of the peri-Urban Inland Valley Dairy Project in West Africa;Agyemang,1999
2. Assessing Farmland Dynamics and Land Degradation in Sahelian Landscapes;Amissah-Arthur;Int. J. of Geogr. Info. Sci.,2000
3. Developing a Crop-Livestock Geographic Information System for Managing Resource Use, Impact Assessment and Technology Targeting in the Moist Savannas;Amissah-Arthur;Report ILRI/IITA,1996
4. The Concept of Carrying Capacity in sub-Saharan Africa- myth or reality;de Leeuw,1993
5. A New Assessment of the World Status of Desertification;Dregne,1991