Balota, E. L., Machineski, O. e Truber, P. V. (2011) “<b>Soil enzyme activities under pig slurry addition and different tillage systems</b&gt; - doi: 10.4025/actasciagron.v33i4.9816”, Acta Scientiarum. Agronomy, 33(4), p. 729-737. doi: 10.4025/actasciagron.v33i4.9816.