Columbia subject headings:
Authors, Nicaraguan--19th century--Correspondence.
Authors, Nicaraguan--20th century--Correspondence.
Darío, Rubén, 1867-1916--Correspondence.
Harvard subject headings:
Authors, Nicaraguan--20th century--Correspondence.
Darío, Rubén, 1867-1916--Correspondence.
Princeton subject headings:
Authors, Nicaraguan--20th century--Correspondence.
Darío, Rubén, 1867-1916--Correspondence.