Roque, C.G., Centurion, J.F., Alencar, G.V. de, Beutler, A.N., Pereira, G.T. and Andrioli, I. 2008. <b>Evaluate of two penetrometers in penetration resistance of Haplustox in different use</b&gt; - DOI: 10.4025/actasciagron.v25i1.2346. Acta Scientiarum. Agronomy. 25, 1 (Apr. 2008), 53-57. DOI:https://doi.org/10.4025/actasciagron.v25i1.2346.