@article{pires_melo_motta_lima_2007,  title={Majors soil classes of the metropolitan region of Curitiba (PR), Brazil: II - interaction of Pb with mineral and organic constituents},  volume={50},  ISSN={1516-8913},  url={https://doi.org/10.1590/S1516-89132007000200002},  DOI={10.1590/S1516-89132007000200002},  number={2},  journal={Brazilian Archives of Biology and Technology},  publisher={Instituto de Tecnologia do Paraná - Tecpar},  author={Pires, Ana Christina Duarte and Melo, Vander de Freitas and Motta, Antônio Carlos Vargas and Lima, Valmiqui Costa},  year={2007},  month={Mar},  pages={183–192} }