Tonye, J.2007-11-131989-04-012007-11-131989IDRC-271ehttp://hdl.handle.net/10625/17249Meeting: International Workshop on Alley Farming in the Humid and Subhumid Tropics, 10-14 Mar. 1986, Ibadan, NGIn IDL-2829p. 158-162application/pdfenBook Chapter