Columbia subject headings:
Harvard subject headings:
Human territoriality--Europe--History--19th century.
Human territoriality--Europe--History--20th century.
Human territoriality--Political aspects--Germany--History--20th century.
Human territoriality--Political aspects--History--19th century.
Human territoriality--Political aspects--History--20th century.
Human territoriality--Political aspects.
Nation-state--History--19th century.
Nation-state--History--20th century.
Spatial behavior--Political aspects--Europe--History--19th century.
Spatial behavior--Political aspects--Europe--History--20th century.
Spatial behavior--Political aspects--Germany--History--19th century.
Spatial behavior--Political aspects--Germany--History--20th century.
Spatial behavior--Political aspects.
Princeton subject headings:
Human territoriality--Europe--History--19th century.
Human territoriality--Europe--History--20th century.
Human territoriality--Political aspects--Germany--History--20th century.
Human territoriality--Political aspects--History--19th century.
Human territoriality--Political aspects--History--20th century.
Nation-state--History--19th century.
Nation-state--History--20th century.
Spatial behavior--Political aspects--Europe--History--19th century.
Spatial behavior--Political aspects--Europe--History--20th century.
Spatial behavior--Political aspects--Germany--History--19th century.
Spatial behavior--Political aspects--Germany--History--20th century.