00526nam a2200157 a 450000100080000000500110000800800410001910000200006024500790008026001460015930000120030565000090031770000160032670000130034270000130035521139032020-01-08       1996    bl uuuu     u00u1 u    #d1 aTEIXEIRA, W. G.  aLand use systems in degraded areas in the western Amazon Region of Brazil.  aIn: CONFERENCE OF THE INTERNATIONAL SOIL CONSERVATION ORGANISATION, 9., 1996, Bonn. Towards sustainable land use: abstracts. Bonn: ISCOc1996  ap. 114.  aSolo1 aSCHROTH, G.1 aZECH, W.1 aHUWE, B.