Columbia subject headings:
Bestiaries--History and criticism.
Literature, Medieval--History and criticism.
Physiologus.
Harvard subject headings:
Bestiaries--History and criticism
Biology--History--Early works to 1800.
Mineralogy--Early works to 1800
Natural history--Pre-Linnean works
Physiologus
Princeton subject headings:
Bestiaries--History and criticism.
Biology--History--Early works to 1800.
Mineralogy--Early works to 1800.
Natural history--Pre-Linnean works.
Physiologus.