Biomonitoring of Pb and Cd in two impacted watersheds in southeast Brazil, using the freshwater mussel Anadontites trapesialis (Lamarck, 1819) (Bivalvia : Mycetopodidae) as a biological monitor - Tomazelli, Andréa Cristina; Martinelli, Luiz Antonio; Avelar, Wagner Eustáquio Paiva; Camargo, Plinio Barbosa de; Fostier, Anne Helene; Ferraz, Epaminondas Sansigolo de Barros; Krug, Francisco José; Santos Júnior, Dário (Brazilian Archives of Biology and Technology, 2003)