1. Soil of the Navrongo-Bawku Area, Upper East Region, Ghana;Adu,1969
2. Land Degradation Detection, Mapping and Monitoring in the North Western Part of Hebei Province, China Using Remote Sensing and GIS Technologies, Geospatial Application Papers;Al-Quraishi,2004
3. Ethno-pedology Surveys in the Semi-arid Savannah Zone of Northern Ghana. Tech. Report No. 185;Asiamah,1996
4. Land Degradation in Ghana;Benneh,1990
5. A Five Year Medium Term Development Plan 1996–2000;Bolgatanga District Assembly,1996