Freire, Rosane, Cássia Maria Bonifácio, Fabrí­cio Hernandes de Freitas, Roselene Maria Schneider, e Célia Regina Granhen Tavares. 2013. “<b>Nitrogen Forms and Total Phosphorus in Water Courses: a Study at Maringá Stream, Paraná State</b> - Doi: 10.4025/actascitechnol.V35i4.14018”. Acta Scientiarum. Technology 35 (4):711-16. https://doi.org/10.4025/actascitechnol.v35i4.14018.