Columbia subject headings:
Andrade, Carlos Drummond de, 1902-1987--Criticism and interpretation.
Harvard subject headings:
Andrade, Carlos Drummond de, 1902-1987--Criticism and interpretation.
Princeton subject headings:
Andrade, Carlos Drummond de, 1902- Claro enigma.
Andrade, Carlos Drummond de, 1902---Criticism and interpretation.