Columbia subject headings:
Harvard subject headings:
Factories--Remodeling for other use--Spain--Madrid.
Madrid (Spain)--Buildings, structures, etc.
Matadero Municipal de Madrid--Conservation and restoration--Designs and plans.
Public architecture--Spain--Madrid.
Princeton subject headings:
Architecture--Spain--Madrid--History--20th century.
Madrid (Spain)--Buildings, structures, etc.
Matadero Municipal de Madrid.