Introduction : planning for sustainable development in the third world / Valentine Udoh James -- Indigenous knowledge systems for sustainable agriculture in Africa / Dennis Michael Warren -- The roles of animals in cultural, social, and agro-economic systems / Constance M. McCorkle -- Maximizing irrigation's contribution to sustainable development in Africa : lessons from the Tono irrigation scheme in Ghana / Michael A. Burayidi -- Natural systems sustainability and agriculture in Africa / Valentine Udoh James -- Indigenous knowledge, biodiversity conservation, and development / Dennis Michael Warren -- Hazardous waste problems and management in developing countries : an examination of Africa / Valentine Udoh James -- Sustainability of the Danfa Ghana Group of Health Projects : a 26-year overview / Julius S. Prince, Alfred K. Neumann, and William Haven North -- African economic history and its planning potential : an investigation of sources / Terrence J. Lamb -- The importance of self-sufficiency to African countries / Valentine Udoh James -- Toward sustainable development in the twenty-first century : reengineering development in Sub-Saharan Africa / Felix M. Edoho -- Tourism development : a research note on Africa / Valentine Udoh James -- Impact of British rule on Nigerian towns and cities : did it produce a sustainable planning style? / Valentine Udoh James.