Columbia subject headings:
Biblioteca Nacional Rubén Darío--Periodicals.
Nicaragua--Bibliography--Periodicals.
Harvard subject headings:
Bibliography--Nicaragua--Periodicals.
Biblioteca Nacional Rubén Darío--Periodicals.
National libraries--Nicaragua--Periodicals.
Nicaragua--Bibliography--Periodicals.
Princeton subject headings:
Biblioteca Nacional Rubén Darío--Periodicals.
National libraries--Nicaragua--Periodicals.
Nicaragua--Bibliography--Periodicals.