Columbia subject headings:
Amazon River--Description and travel.
Amazon River.
Amazonas (Brazil)--Description and travel.
Colombia--Description and travel.
Márquez Bravo, Tomás--Travel.
Pinell, Gaspar de, Fray--Travel.
Putumayo (Colombia : Department)--Description and travel.
Putumayo River--Description and travel.
Putumayo River.
Rivers--Brazil--Navigation.
Rivers--Colombia--Navigation.
Harvard subject headings:
Amazon River--Description and travel.
Amazonas (Brazil)--Description and travel.
Márquez Bravo, Tomás--Travel.
Pinell, Gaspar de, Fray--Travel.
Putumayo (Colombia : Department)--Description and travel.
Putumayo River--Description and travel.
Rivers--Brazil--Navigation.
Rivers--Colombia--Navigation.
Princeton subject headings: