Columbia subject headings:
Roofs--Austria--Salzburg--Design and construction.
Roofs--Austria--Salzburg.
Salzburg (Austria)--Buildings, structures, etc.
Harvard subject headings:
Roofs--Austria--Salzburg--Design and construction.
Roofs--Austria--Salzburg.
Salzburg (Austria)--Buildings, structures, etc.
Princeton subject headings:
Roofs--Austria--Salzburg--Design and construction.
Roofs--Austria--Salzburg.
Salzburg (Austria)--Buildings, structures, etc.