Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--Economic conditions
Berlin (Germany)--Population.
Berlin (Germany)--Social conditions
Berlin Metropolitan Area (Germany)--Economic conditions.
Berlin Metropolitan Area (Germany)--Population.
Berlin Metropolitan Area (Germany)--Social conditions.
Demographic transition--Germany--Berlin.
Princeton subject headings:
Berlin Metropolitan Area--Economic conditions.
Berlin Metropolitan Area--Population.
Berlin Metropolitan Area--Social conditions.