@inproceedings{inproceedings853fbea7,
title   = {Consequences of clearing and tillage on the Amazonian natural ecosystem soil},
author = {Martins, P F S and Cerri, Carlos Clemente and Volkoff, B and Andreux, F and Chauvel, A},
year = {1988},
publisher = {Unesp-Faculdade de Ciências Agronômicas},
booktitle   = {International Congress of Americanists}
}