Columbia subject headings:
Prints, Spanish.
Prints--Spain--20th century.
Spain. Ministerio de Trabajo y Seguridad Social--Art collections.
Harvard subject headings:
Prints, Spanish--Catalogs.
Prints--20th century--Spain--Catalogs.
Prints--Private collections--Spain--Madrid--Catalogs.
Prints--Spain--Madrid--Catalogs.
Spain. Ministerio de Trabajo y Seguridad Social--Art collections--Catalogs.
Princeton subject headings:
Prints, Spanish.
Prints--20th century.
Spain. Ministerio de Trabajo y Seguridad Social--Art collections.