Columbia subject headings:
Authors, Venezuelan--20th century--Correspondence.
Briceño-Iragorry, Mario, 1897-1958--Correspondence.
Picón-Salas, Mariano, 1901-1965--Correspondence.
Harvard subject headings:
Authors, Venezuelan--20th century--Correspondence.
Briceño-Iragorry, Mario, 1897-1958--Correspondence.
Picón-Salas, Mariano, 1901-1965--Correspondence.
Princeton subject headings:
Authors, Venezuelan--20th century--Correspondence.
Briceño-Iragorry, Mario, 1897-1958--Correspondence.
Picón-Salas, Mariano, 1901-1965--Correspondence.