@article{lopes_fernandes_lourdes pinheiro ruivo_cattanio_souza_2011,  title={Microbial biomass and soil chemical properties under different land use systems in northeastern Pará},  volume={35},  ISSN={0100-0683},  url={https://doi.org/10.1590/S0100-06832011000400006},  DOI={10.1590/S0100-06832011000400006},  number={4},  journal={Revista Brasileira de Ciência do Solo},  publisher={Sociedade Brasileira de Ciência do Solo},  author={Lopes, Elessandra Laura Nogueira and Fernandes, Antonio Rodrigues and Lourdes Pinheiro Ruivo, Maria de and Cattanio, José Henrique and Souza, Gladys Ferreira de},  year={2011},  month={Jul},  pages={1127–1139} }