Columbia subject headings:
Radicalism in literature.
Shelley, Percy Bysshe, 1792-1822--Political and social views.
Harvard subject headings:
Radicalism in literature.
Shelley, Percy Bysshe, 1792-1822
Shelley, Percy Bysshe, 1792-1822--Political and social views.
Princeton subject headings:
Shelley, Percy Bysshe, 1792-1822.