Columbia subject headings:
Cologne (Germany)--Genealogy.
Cologne (Germany)--Politics and government.
Elite (Social sciences)--Germany--Cologne.
Harvard subject headings:
Cologne (Germany)--Genealogy.
Cologne (Germany)--Politics and government.
Elite (Social sciences)--Germany--Cologne.
Princeton subject headings:
Cologne (Germany)--Genealogy.
Cologne (Germany)--Politics and government.
Elite (Social sciences)--Germany--Cologne.