Columbia subject headings:
Anarchists--Soviet Union--Biography.
Kropotkin, Petr Alekseevich, kni︠a︡zʹ, 1842-1921.
Harvard subject headings:
Princeton subject headings:
Anarchists--Soviet Union--Biography.
Kropotkin, Petr Alekseevich, kni︠a︡zʹ, 1842-1921.