- Lichtheim, George4
- Cole, George Douglas Howard2
- Bahro, Rudolf1
- Bell, Daniel1
- Bernstein, Eduard1
- Boettke, Peter J.1
- Bruce, Iain1
- Bukharin, Nikolaĭ1
- Burnham, James1
- Buttinger, Joseph1
- Carr, Barry1
- Caute, David1
- Cell, Charles P.1
- Centre interuniversitaire d'études européennes. Colloque international1
- Chamberlin, William Henry1
- Communist International. Congress1
- Crossman, R. H. S.1
- Dan, F.1
- Denitch, Bogdan Denis1
- Dodge, Peter1