selected publications article African gene bank helps to save indigenous varieties 1987 New cropping system reveals promise for low in-put farmers 1986 Wetlands: great potential for food production 1986 document Agro-pastoral show in Cameroon-Farmers keen to learn new ideas 1985 Alley Cropping: a stable alternative to shifting cultivation 1985 Plastic mulching a big innovation for yam farmers 1985
