Notas sobre la familia Potamotrygonidae Garman, 1913
By: por Dr. Mariano N. Castex S.J., Dr. Ignacio O. Maciel
Series: Publicacio n tecnica -- no. 14; Publicacio n tecnica (Direccion General de Recursos Naturales) -- no. 14
Publisher: Direccion General de Recursos Naturales
Published: 1965
Place of publication: Santa Fe
Language: spa
Number of pages: 23
Subjects: Freshwater stingrays
Notes: Includes bibliographical references.