Reforms in turbulent times : a study on the theory and practice of three irrigation management policy reform models in Mashonaland, Zimbabwe / [Conrade Zawe ; photo's: Conrade Zawe ; maps: Conrade Zawe ... et al. ; ed.: Flip Wester]Church and settler in colonial Zimbabwe : a study in the history of the Anglican diocese of Mashonaland/Southern Rhodesia, 1890-1925 / by Pamela Welch