Columbia subject headings:
Harvard subject headings:
Central business districts--Germany (West)--Case studies.
Central business districts--Great Britain--Case studies.
Pedestrian areas--Germany (West)--Case studies.
Pedestrian areas--Great Britain--Case studies.
Street-railroads--Germany (West)--Case studies.
Street-railroads--Great Britain--Case studies.
Subways--Germany (West)--Case studies.
Subways--Great Britain--Case studies.
Princeton subject headings:
Central business districts--Germany (West)--Case studies.
Central business districts--Great Britain--Case studies.
Pedestrian areas--Germany (West)--Case studies.
Pedestrian areas--Great Britain--Case studies.
Street-railroads--Germany (West)--Case studies.
Street-railroads--Great Britain--Case studies.
Subways--Germany (West)--Case studies.
Subways--Great Britain--Case studies.