G O Otieno

Agro-ecosystems, natural resources management and human health related research in East Africa

David Waltner-Toews, John J. McDermott, J. M. Gathuma, 1998 .

Agro-ecosystem health: principles and methods used in high-potential tropical agro-ecosystem

David Waltner-Toews, John J. McDermott, J. M. Gathuma, 2000 .