The merchant of revolution. The life of Alexander Israel Helphand-Parvus, 1867-1924. [With plates including portraits, and a bibliography.]
Zeman, Z. A. B.(Zbyněk A. B.),1928-
Scharlau, Winfried B.
London,
1965.
Joint authors: Zbyněk Anthony Bohuslav Zeman and Winfried B. Scharlau.