Columbia subject headings:
Chapbooks, Spanish--History.
Folk songs, Spanish--Spain--Castilla y León--History and criticism.
Folk songs, Spanish--Spain--Castilla y León--Texts.
Oral tradition--Spain--Castilla y León.
Spanish poetry--20th century--History and criticism.
Spanish poetry--20th century.
Harvard subject headings:
Castile (Spain)--Social life and customs.
Folklore--Spain--Castile.
Oral tradition--Spain--Castile.
Princeton subject headings:
Oral tradition--Spain--Castile.