Columbia subject headings:
Architecture--Austria--Linz--History--20th century--Guidebooks.
Architecture--Austria--Linz--History--21st century--Guidebooks.
Harvard subject headings:
Architecture--Austria--Linz--20th century--Guidebooks.
Architecture--Austria--Linz--21st century--Guidebooks.
Princeton subject headings:
Architecture--Austria--Linz--20th century--Guidebooks.
Architecture--Austria--Linz--21st century--Guidebooks.
Guidebooks.