La acción humana
SALATI, E.; DOUROJEANNI, M.J.; NOVAES, F.C.; OLIVEIRA, A.E.; PERRITT, R.W.; SHUBART, H.O.R. &amp; UMANA, J.C. 1990. Amazonia. In: THE EARTH as Transformed by Human Action. Londres, Cambridge University, p. 479-493.