University of Nairobi. Institute of African Studies, Kipkorir, B. E., Soper, R. C., & Ssennyonga, J. W. (1981). Kerio Valley, past, present, and future: Proceedings of a seminar held in Nairobi at the Institute of African Studies, University of Nairobi, May 21-22, 1981. Published for Institute of African Studies by Eleza Services.

University of Nairobi. Institute of African Studies, B. E. Kipkorir, R. C. Soper, juo J. W. Ssennyonga. Kerio Valley, Past, Present, and Future: Proceedings of a Seminar Held in Nairobi at the Institute of African Studies, University of Nairobi, May 21-22, 1981. Nairobi, Kenya: Published for Institute of African Studies by Eleza Services, 1981.

University of Nairobi. Institute of African Studies, et al. Kerio Valley, Past, Present, and Future: Proceedings of a Seminar Held in Nairobi at the Institute of African Studies, University of Nairobi, May 21-22, 1981. Published for Institute of African Studies by Eleza Services, 1981.