Columbia subject headings:
Harvard subject headings:
Amazon River Valley--Description and travel.
Andrade, Mário de, 1893-1945--Correspondence.
Olindense, Sérgio--Correspondence.
Princeton subject headings:
Amazon River Valley--Description and travel.
Andrade, Mário de, 1893-1945--Correspondence.
Olindense, Sérgio--Correspondence.