Columbia subject headings:
Popular literature--Spain--History and criticism.
Spanish literature--20th century--History and criticism.
Spanish literature--21st century--History and criticism.
Harvard subject headings:
Popular literature--Spain--History and criticism.
Spanish literature--20th century--History and criticism
Spanish literature--21st century--History and criticism.
Princeton subject headings:
Popular literature--Spain--History and criticism.
Spanish literature--20th century--History and criticism.
Spanish literature--21st century--History and criticism.