Candido Rondon found the River of Doubt, now the Rio Roosevelt, which flows in this country's Amazonas State
Rpibv ... - Brasiliana USP [PAR] Rondon Scientific Expedition, and the exploration of the river ... meritorious 
Colonel of Engineers, Candido Mariano .... the work of Rio Branco; you have 
discovered this ... river is more like a dangerous serpent, now winding ..... capital 
of the State of Amazonas.