Introduction: the African condition - an overview, M.B. Gleave; tropical African colonial experience, W.T.W. Morgan. Part 1 Resources for development: environmental research constraints on agricultural development, R.P. Moss; human resources and development, M.B. Gleave; energy resources, E.S. Simpson. Part 2 Economic activities and development: traditional agriculture, pastoralism and fishing, J.A. Binns; agricultural development, D. McMaster; mining and manufacturing, I.Ll. Griffiths; trade, transport and development, B.W. Hodder and M.B. Gleave. Part 3 Adjustments to development: population mobility, W.T.S. Gould; urbanization, M.B. Gleave. Part 4 An assessment: future prospects, B.W. Hodder.