%A G. Fischer %A M.M. Shah %A A.H. Kassam %A H.T. van Velthuizen %T Agro-Ecological Land Resources Assessment for Agricultural Development Planning: A Case Study for Kenya. Resources Data Base and Land Productivity: Technical Annex 8: Crop Productivity Assessment: Results at District Level %C IIASA, Laxenburg, Austria %D 1994 %I XQ-94-805 %L iiasa4025