@article{article3e3e2d2b,
title   = {Balance of the nutrients Ca+2, Mg+2, Na+, K+e NO3- on a first order catchment covered with natural vegetation in Central Amazonia},
author = {Cunha, Hillandia Brandao Oliveira da and Oliveira, João Augusto Dantas and Victoria, Reynaldo Luiz},
year = {1999},
journal   = {Acta Amazonica}
}