Moreira, A. and Malavolta, E. 2004. Dynamic of organic matter and microbial biomass in a soil under different management systems in the Western Amazon. Pesquisa Agropecuaria Brasileira. 39, 11 (Nov. 2004), 1103–1110. DOI:https://doi.org/10.1590/S1678-3921.pab2004.v39.6883.