1. Plan del curso de los Rios Huallaga y Ucayali y de la Pampa del Sacramento [cartographic material]
1830. 2008-07-10T19:52:47Z. 2018-09-05T19:51:40Z. Sobreviela, Manuel, -1803, cartographer. [publisher not identified], Lith. by A. Hoen & Co.). Spanish. cartographic image. Public. Huallaga River (Peru), Ucayali River (Peru), Pampa del Sacramento (Peru), Peru, Huallaga River., Pampa del Sacramento., and Ucayali River.
