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Silva, A.G.C. da and Goulart, E. 2008. <b>Morphometry of upper ParanĂ¡ river freshwater stingrays (Chondrichthyes, Potamotrygonidae)</b&gt; - DOI: 10.4025/actascibiolsci.v29i4.885. Acta Scientiarum. Biological Sciences. 29, 4 (Feb. 2008), 413-419. DOI:https://doi.org/10.4025/actascibiolsci.v29i4.885.