Columbia subject headings:
Harvard subject headings:
Authors, Portuguese--20th century--Correspondence
Cesariny, Mário--Correspondence.
Seixas, Artur do Cruzeiro, 1920---Correspondence.
Princeton subject headings:
Authors, Portuguese--20th century--Correspondence.
Cesariny, Mário--Correspondence.
Seixas, Artur do Cruzeiro, 1920-2020--Correspondence.