El Pachitea y el alto Ucayali
Subtitle: visión histórica de dos importantes regiones de la selva peruana
By: Dionisio Ortiz.
Publisher: Impr. Editorial San Antonio
Published: 1974
Place of publication: Lima
Language: spa
Number of pages: 943
Subjects: Pachitea River (Peru); Ucayali River (Peru); Huánuco (Peru : Dept.) -- History; Loreto (Peru : Dept.) -- History
Other titles: Alto Ucayali y Pachitea
Notes: Cover title: Alto Ucayali y Pachitea.

Bibliography: xi-xviii.