Columbia subject headings:
Harvard subject headings:
Architecture--Conservation and restoration--Switzerland--Basel-Stadt.
Architecture--Switzerland--Basel-Stadt--Conservation and restoration.
Architecture--Switzerland--Basel-Stadt.
Public works--Switzerland--Basel-Stadt--Finance--History--20th century.
Princeton subject headings:
Architecture--Switzerland--Basel-Stadt--Conservation and restoration.
Architecture--Switzerland--Basel-Stadt.
Public works--Switzerland--Basel-Stadt--Finance--History--20th century.