Columbia subject headings:
Anarchism--Russia--History.
Anarchists--Russia--Biography.
Kropotkin, Petr Alekseevich, kni︠a︡zʹ, 1842-1921.
Harvard subject headings:
Anarchism--Russia--History.
Anarchists--Russia--Biography
Geographers--Russia--Biography.
Kropotkin, Petr Alekseevich, kni︠a︡zʹ, 1842-1921
Princeton subject headings: