Columbia subject headings:
Historic buildings--Conservation and restoration--Italy--Milan--History.
Teatro alla Scala--Designs and plans.
Teatro alla Scala--History.
Theaters--Conservation and restoration--Italy--Milan--History.
Theaters--Italy--Milan--History.
Harvard subject headings:
Botta, Mario, 1943-
Teatro alla Scala--Conservation and restoration--Designs and plans.
Teatro alla Scala--Design and construction--History.
Theaters--Italy--Milan--Conservation and restoration--Designs and plans.
Princeton subject headings:
Milan (Italy)--Buildings, structures, etc.
Teatro alla Scala.
Theaters--Conservation and restoration--Italy--Milan--Designs and plans.