Columbia subject headings:
Metamorphosis in literature--Congresses.
Metamorphosis--Mythology--Congresses.
Metamorphosis--Songs and music--Congresses.
Harvard subject headings:
Metamorphosis in literature--Congresses.
Metamorphosis--Mythology--Congresses.
Metamorphosis--Songs and music--Congresses.
Princeton subject headings:
Metamorphosis in literature--Congresses.
Metamorphosis--Mythology--Congresses.
Metamorphosis--Songs and music--Congresses.