Columbia subject headings:
Keats, John, 1795-1821--In literature.
Shelley, Percy Bysshe, 1792-1822. Adonais.
Harvard subject headings:
Keats, John, 1795-1821, in fiction, drama, poetry, etc.
Poets--Poetry
Shelley, Percy Bysshe, 1792-1822. Adonais.
Princeton subject headings:
Keats, John, 1795-1821--Poetry.
Shelley, Percy Bysshe, 1792-1822. Adonais.