Columbia subject headings:
Architecture--Switzerland--Basel--20th century--Guidebooks.
Basel (Switzerland)--Buildings, structures, etc.--Guidebooks.
Harvard subject headings:
Architecture--Switzerland--Basel--History--Guidebooks.
Architecture--Switzerland--Basel.
Basel (Switzerland)--Buildings, structures, etc.
Basel (Switzerland)--Buildings, structures, etc.--Guidebooks.
City planning--Switzerland--Basel.
Princeton subject headings:
Architecture--Switzerland--Basel--20th century--Guidebooks.
Basel (Switzerland)--Buildings, structures, etc.--Guidebooks.
Guidebooks.