Columbia subject headings:
Borochov, Ber, 1881-1917--Correspondence.
Labor Zionists--Correspondence.
Harvard subject headings:
Borochov, Ber, 1881-1917.
Labor Zionism--History.
Zionists--Soviet Union--Biography.
Princeton subject headings:
Borochov, Ber, 1881-1917. Correspondence.
Labor Zionists--Correspondence.