Columbia subject headings:
Epidemics--Europe--History.
Epidemics--Social aspects.
Medicine, Medieval--Europe.
Middle Ages.
Harvard subject headings:
Epidemics--Europe--History.
Epidemics--Social aspects.
Europe--Social conditions--To 1492
Medicine, Medieval--Europe.
Middle Ages
Princeton subject headings:
Epidemics--Europe--History.
Epidemics--Social aspects.
Medicine, Medieval--Europe.
Middle Ages.