Columbia subject headings:
Cities and towns--Social aspects--Europe--History.
Firearms ownership--Europe--History.
Gun control--Europe--History.
Harvard subject headings:
Cities and towns--Social aspects--Europe--History--Congresses.
Firearms ownership--Europe--History--Congresses.
Gun control--Europe--History--Congresses.
Princeton subject headings:
Cities and towns--Social aspects--Europe--History.
Firearms ownership--Europe--History.
Gun control--Europe--History.