524,475 PROCEEDINGS Proceedings of the XVth World Congress of Philosophy, 17-22 September 1973, Varna, Bulgaria. Sofia 1974 Press Production Centre 8° /K.tyt. oraz tekst w jęz, ros., franc., niem.] [Vol.] 3. Mature and existence of man. Humanism and technological revolution. Language, logic and action. Man, logos and history. Society and its norms, s. 623, nlb. 1