Correlation between heavy metal ions (Copper, Zinc, Lead) concentrations and root lenght of allium cepa L. in polluted river water - Palacio, Soraya Moreno; Espinoza Quinones, Fernando Rodolfo; Galante, Raquel Manozzo; Zenatti, Dilcemara Cristina; Seolatto, Araceli Aparecida; Lorenz, Evandro Kleber; Zacarkim, Carlos Eduardo; Rossi, Nickeli; Rizzutto, Márcia de Almeida; Tabacniks, Manfredo Harri (Brazilian Archives of Biology and Technology, 2005)