Columbia subject headings:
God in literature.
Vallejo, César, 1892-1938--Criticism and interpretation.
Vallejo, César, 1892-1938. Heraldos negros.
Harvard subject headings:
Vallejo, César, 1892-1938--Criticism and interpretation.
Vallejo, César, 1892-1938. Heraldos negros.
Princeton subject headings: