Kliemann, H.J. and Buso, W.H.D. 2007. EFFECTS OF CROPPING SYSTEMS AND LIMING ON THE ESTIMATES OF THE POTENTIALLY MINERALIZABLE NITROGEN FRACTIONS ON SOILS IN SOUTHWESTERN GOIÁS. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics]. 32, 2 (Nov. 2007), 59–68.