Le chemin du pouvoir

Fonds Perrone
By Kautsky, Karl, Fay, Victor, Adler, Victor, Bebel, August, Dietz, J.H.W., Haase, Hugo, Herzfeld, Joseph, Zetkin, Clara
Date 1969

Lettres à Kugelmann (1862-1874)

Bibliotheek François Vercammen
By Marx, Karl, Lenin, Vladimir Iljitsj, Kugelmann, Franzisca
Date 1968

En partant du "Capital"

By Fay, Victor, Altvater, Elmar, Amin, Samir, Barel, Yves
Date 1968