Economic Development in the Tropics. B. W. Hodder. London, Methuen, 1973. (2 ed.) 263 pp. Cloth: £2,40, Paperback: £1,20 The Growth of Co-operatives in Zambia 1914-71. C. Stephen Lombard. Lusaka, University of Zambia Institute for African Studies, 1971. (Zambian Papers No. 6) 40 pp. K2,50/£l,44. The Tio Kingdom of the Middle Congo 1880-1892. Jan Vansina. London, Oxford University Press for the International African Institute, 1973. 586 pp. R19,00/£8,00. Leadership and Authority in an African Society: The Afikpo Village-Group. Simon Ottenberg. Seattle and London, University of Washington Press, 1971. xvii, 336 pp., 11 plates, maps. $9,50/£4,50. How Musical is Man? John Blacking. Seattle and London, University of Washington Press, 1973. (the John Danz Lectures). 116 pp., illus. Cloth: $6,95 Paperback:$2,95. African Acquisitions: Report of a Publications Survey Trip to Nigeria, Southern Africa, and Europe, 1972. Julian W. Withereix. Washington, Library of Congress, 1973. 122 pp. $3,60. Colonialism in Africa 1870-1960, Volume V, A Bibliographical Guide to Colonialism in Sub-Saharan Africa. Peter Duignan and L. H. Gann. London, Cambridge University Press, 1973. xii, 552 pp. £9. Education in Kenya: An Historical Study. James R. Sheffield. New York and London, Teachers College Press, Columbia University, 1973. Cloth: $6,50, Paperback: $3,95. Spanish-Speaking Africa: A Guide to Official Publications. Susan Knoke Rushworth. Washington, U.S. Government Printer, 1973. (General Reference and Bibliographical Division, Reference Department, Library of Congress) $1.25. O Fenomeno da Escultura Maconde Chamada “Moderna”. Margot Dias. Lisbon, Junta de Investigacoes do Ultramar, Centro de Estudos de Antropologia Cultural, 1973. (Estudos de Antropologia Cultural, No. 9) 47pp., 32 photographs.