@PROCEEDINGS {LAWSON:1979c, title = {Agroclimatic constraints to upland rice production in West Arica}, author = {Lawson, T. L. }, booktitle = {WMO/IRRI Symposium/Planning Meeting on the Agrometeorology of the Rice Crop, IRRI, Los Banos, December 3-7, 1979}, year = {1979}, month = {December}, }