Pires, L. F. “<b>Gamma-Ray Computed Tomography to Evaluate Changes in the Structure of a Clayey Soil Due to Agricultural traffic</b&gt; - Doi: 10.4025/actasciagron.V33i3.4727”. Acta Scientiarum. Agronomy, Vol. 33, nº 3, abril de 2011, p. 411-6, doi:10.4025/actasciagron.v33i3.4727.