@INBOOK {GUNNEWEG: 1986, title = {A model to assess proposed procedures for water control, application and results for two small inland valleys}, author = {Gunneweg, H. A. M. I. and Evers, A. and Huizing, A. }, year = {1986}, type = {The Weltands and Rice in sub-Saharan Africa edited by A.S.R. Juo and J.A. Lowe}, pages = {87--94}, }