Columbia subject headings:
Gianotti, Emilio, 1891-1930--Travel.
Indians of South America--Ecuador--Napo (Province)
Indians of South America--Missions--Ecuador--Napo (Province)
Missions--Ecuador--Napo (Province)
Napo (Ecuador : Province)--Description and travel.
Harvard subject headings:
Gianotti, Emilio, 1891-1930--Journeys.
Indians of South America--Ecuador--Napo (Province)
Indians of South America--Missions--Ecuador--Napo (Province)
Missions--Ecuador--Napo (Province)
Napo (Ecuador : Province)--Description and travel.
Princeton subject headings: