@article{articleb898b840,
title   = {Effect of fallow land, cultivated pasture and abandoned pasture on soil fertility in two deforested amazonian regions},
author = {Diez, J A and Diaz-Burgos, M A and Cerri, Carlos Clemente and Feigl, Brigitte Josefine and Piccolo, Marisa de Cassia},
year = {1997},
doi = {10.1590/s0103-90161997000100007},
journal   = {Scientia Agricola}
}