"Der Imperialismus" und seine Kritiker.
8vo, 231, (9) pp. Publisher's wrappers with printed dustjacket.
First edition of this condensation of his principal work, "Der Imperialismus" (1926), with a discussion of the criticism that was levelled at it after it appeared three year previously. The author is usually considered a disciple of Rosa Luxemburg, though he criticized both her and Lenin for failing to recognize the extent to which imperialism had served to improve conditions for the working classes in the industrialized parts of the world.