Columbia subject headings:
Alchemy--Europe--History--To 1500.
Artisans--Europe--Folklore.
Artisans--Europe--History.
Middle Ages.
Mythology.
Harvard subject headings:
Alchemy--Europe--History--To 1500.
Artisans--Europe--Folklore.
Artisans--Europe--History.
Europe--History--476-1492.
Middle Ages
Mythology
Mythology.
Princeton subject headings:
Artisans--Europe--History.
Europe--History--476-1492.