Columbia subject headings:
Harvard subject headings:
Anarchism--History--20th century.
Malatesta, Errico, 1853-1932--Exile--England--London.
Malatesta, Errico, 1853-1932.
Princeton subject headings:
Anarchism--History--20th century.
Malatesta, Errico, 1853-1932--Exile--England--London.
Malatesta, Errico, 1853-1932.