Bermejo (bərmā´hō), river, c.650 mi (1,050 km) long, rising in N central Argentina, flowing SE along the border with Bolivia and through N Argentina to Pilar, Paraguay. Through much of its course, it is the border between Argentina's Formosa and Chaco provinces. Most of the river is navigable by small craft.
"Bermejo." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (March 18, 2018). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/bermejo
"Bermejo." The Columbia Encyclopedia, 6th ed.. . Retrieved March 18, 2018 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/bermejo