Columbia subject headings:
Harvard subject headings:
Anarchists--Soviet Union--Biography
Kropotkin, Petr Alekseevich, kni︠a︡zʹ, 1842-1921
Princeton subject headings:
Anarchism--History--19th century.
Anarchists--Soviet Union--Biography.
Kropotkin, Petr Alekseevich, kni︠a︡zʹ, 1842-1921.