MESQUITA, M. L. R.; ANDRADE, L. A.; PEREIRA, W. E. <b>Soil weed seed bank <i>in situ</i> and <i>ex situ</i&gt; at a smallholder field in Maranhão State, northeastern Brazil. Acta Scientiarum. Agronomy, v. 37, n. 1, p. 93-100, 25 nov. 2014.