00849nam0-22003371i-450 99000104265040332120171115113121.0000104265FED01000104265(Aleph)000104265FED0100010426520000920d1965----km-y0itay50------bafreFRGroupoidesGeorges PapyParisPresses Universitaires de France1965108 p.24 cmTeoria dei gruppiPrincipi di simmetria512Papy,Georges40881ITUNINARICAUNIMARCBK99000104265040332110A-0685169FI1LL 1862396DINEDFI1DINEDGroupoides338426UNINAING01