Contribuciones a la hidrografia del Orinoco y rio Negro
Subtitle: memoria presentada á la Sociedad de geografía de Berlín
By: por Alfredo Jahn, jr. ...
Publisher: Tipografía universal
Published: 1909
Place of publication: Caracas
Language: spa
Number of pages: 52
Subjects: Hydrography -- Orinoco River (Venezuela and Colombia); Hydrography -- Uruguay -- Río Negro.; Orinoco River (Venezuela and Colombia); Rio Negro (Brazil and Uruguay)
Notes: Published in German in the "Zeitschrift der Gesellschaft für erdkunde zu Berlin," n⁰. 2, 1909.