Raikes, Philip L. Dependency and the diffusion of innovation: a critique of extension theory and practice. Vol.3 - Nairobi: East African Universities, 1972. - 39p. ; 34cm. - Paper No.1 - 18 are all bound in one book; 4 . Subjects--Topical Terms: DependencyExtention theory LC Class. No.: DT421.E3 Vol.3 No.4