La vida de Carlos Marx: el hombre y el luchador /

by Nicolaevsky, Boris I. 1887-1966, Nicolaevsky, Boris I. 1887-1966, Maenchen-Helfen, Otto
Published 1973

Forced labor in Soviet Russia /

by Dallin, David J. n. 1889, Dallin, David J. n. 1889, Nicolaevsky, Boris I. 1887-1966
Published 1947