Columbia subject headings:
Architecture--Switzerland--Basel--Guidebooks.
Architecture--Switzerland--Basel--History.
Basel (Switzerland)--Buildings, structures, etc.--Guidebooks.
Harvard subject headings:
Architecture--Switzerland--Basel--Guidebooks.
Architecture--Switzerland--Basel--History.
Basel (Switzerland)--Buildings, structures, etc.--Guidebooks.
Princeton subject headings:
Architecture--Switzerland--Basel--Guidebooks.
Architecture--Switzerland--Basel--History.