Columbia subject headings:
Authors, Peruvian--20th century--Correspondence.
Vallejo, César, 1892-1938--Correspondence.
Harvard subject headings:
Authors, Peruvian--20th century--Correspondence.
Vallejo, César, 1892-1938. Correspondence
Princeton subject headings:
Authors, Peruvian--20th century--Correspondence.
Vallejo, César, 1892-1938. Correspondence.