The distribution, status and conservation of the globally threatened trees of the Mt Cameroon Region. Progress Report to the Fauna and Flora International, UK/Global Trees Campaign Programme (April, 2012)

Community-based agroforestry development and climate change adaptation in Cameroon. A status report submitted to Trees for the Future, USA (2011)

The distribution, status and conservation of the globally threatened birds species of the Lebialem Highlands, SW Cameroon. A final report submitted to Rufford Foundation, UK (2011).

The survey of the distribution and status of the Cross River gorillas in the Lebialem Highlands and Mone East Forests, SW Cameroon (2009). Final Report submitted to Worldwide Fund for Nature and Fauna and Flora International.

The survey of the future of the communities and forests of the Tofala Hills, Lebialem Highlands, SW Cameroon (2009). Final Report submitted to US Fish and Wildlife Service

Community-based management and conservation of the Cross River gorillas in the Lebialem-Mone Forest Landscape, SW Cameroon (2009). Final Report submitted to US Fish and Wildlife Service.

The socio-economic survey of the households in the Lebialem-Mone Forest Landscape, SW Cameroon (2008). Final report submitted to Worldwide Fund for Nature

The Conservation of great apes in the Lebialem Highlands of Cameroon. Final Project Report to Forestry Bureau/Conservation Division, Government of Taiwan (2007)

The status and distribution of Cross River gorillas in the Lebialem-Mone Forest Landscape, SW Cameroon. Final Report submitted to WorldWide Fund for Nature (2008)

The Development of a Community Management Model for Great Apes Conservation at Bechati-Lebialem Forest, South West Cameroon. Final Report submitted to US Fish and Wildlife Service (2009)

The status of great apes populations in the Lebialem Highlands, SW Cameroon. 2005. Final Report submitted to Fauna and Flora International.

A Critical Evaluation of the Impact of the Economic Crisis on the households in the Western Highlands of Cameroon. OCISCA Project, University of Dschang. Final Evaluation Report. 1990.

A Mid-term Review of the World Bank funded National Agricultural Extension and Research Programme, Ministry of Agriculture, Yaounde, Cameroon. 1996.

On-farm Diagnostic Survey and Prioritisation of Farmers Needs in the South West Province of Cameroon. National Agricultural Extension and Research Programme. Ministry of Agriculture. Final Report. 1997.

On-farm Evaluation and Survey Methods in Rural Farms: Case of Peasant Farmers in the South West Province of Cameroon. 1996.