00729nam0-22002651i-450-99000123038040332120100212134115.0000123038FED01000123038(Aleph)000123038FED0100012303820001205d1920----km-y0itay50------bafre<<L'>>évolution des forcesGustave Le BonParisFlammarion1920389 p.Bibliothèque de philosophie scientifiqueLe Bon,Gustave< -1931>57037ITUNINARICAUNIMARCBK990001230380403321305-B-13043MA1MA1Évolution des forces382169UNINA