International Council for Research in Agroforestry, Dryland Agroforestry Research Project; Kenya Agricultural Research Institute; Sang, F.K.A.; Hoekstra, D.A.; Okumu, R.(ICRAF, Nairobi, KE, 1985)
International Council for Research in Agroforestry, Dryland Agroforestry Research Project; Sang, F.K.A.; Hoekstra, D.A.; Mwendandu, R.(ICRAF, Nairobi, KE, 1985)
International Council for Research in Agroforestry, Dryland Agroforestry Research Project; Nyamai, D.O.; Kanja, F.M.; Pegorie, J.(ICRAF, Nairobi, KE, 1990)
International Council for Research in Agroforestry, Dryland Agroforestry Research Project; Mwendandu, R.; Wood, P.J.; Kyalo, E.; Sang, F.K.A.; Oduol, P.(ICRAF, Nairobi, KE, 1986)