Columbia subject headings:
Andrade, Carlos Drummond de, 1902-1987--Correspondence.
Andrade, Mário de, 1893-1945--Correspondence.
Authors, Brazilian--20th century--Correspondence.
Harvard subject headings:
Andrade, Carlos Drummond de, 1902-1987--Correspondence.
Andrade, Mário de, 1893-1945--Correspondence.
Authors, Brazilian--20th century--Correspondence.
Princeton subject headings:
Andrade, Carlos Drummond de, 1902-1987--Correspondence.
Andrade, Mário de, 1893-1945--Correspondence.
Authors, Brazilian--20th century--Correspondence.