Columbia subject headings:
Architecture--Austria--Mühlviertel (Region)--History--20th century.
Harvard subject headings:
Architecture--Austria--Mühlviertel (Region)--History--20th century.
Architecture--Austria--Mühlviertel (Region)--History--21st century.
Architecture--Austria--Mühlviertel--20th century.
Architecture--Austria--Mühlviertel--21st century.
Mühlviertel (Austria : Region)--Buildings, structures, etc.--History--20th century.
Princeton subject headings: