Columbia subject headings:
Hospitals--Social aspects--France--Laon--History.
Hôtel-Dieu de Laon--History.
Laon (France)--History.
Harvard subject headings:
Hospitals--Social aspects--France--Laon--History.
Hôtel-Dieu de Laon--History.
Hôtel-Dieu de Laon.
Laon (France)--History.
Social history--Medieval, 500-1500
Princeton subject headings:
Hospitals--France--Laon--History.
L'Hôtel-Dieu de Laon--History.
Laon (France)--History.