Columbia subject headings:
Philosophy, Medieval.
Skepticism--History--16th century.
Skepticism--History--To 1500.
Harvard subject headings:
Philosophy, Medieval.
Skepticism--History--16th century.
Skepticism--History--To 1500.
Princeton subject headings:
Philosophy, Medieval.
Skepticism--History--16th century.
Skepticism--History--To 1500.