por Davis, Kingsley, 1908-1997 [autor] | Gaya Nicolau, Guillermo [traductor] | Scientific American.
por Gouldner, Alvin Ward, 1920- [autor] | Míguez, Néstor A [traductor] | Gouldner, Alvin Ward, 1920-. Future of intellectuals and the rise of the new class.
por Carr, Edward Hallett, 1892- [autor] | Carr, Edward Hallett, 1892-. History of Soviet Russia.