00965nam0-22003371i-450-99000998300040332120160309085907.00-19-851952-4000998300FED01000998300(Aleph)000998300FED0100099830020150710d1981----km-y0itay50------baengGBa---a---001yyQuantum gravity 2<<a >>second Oxford symposiumedited by C.J. Isham, R. Penrose and D.W. SciamaOxfordClarendon Press1981669 p.ill.24 cmRelativitàGravitàIsham,Chris J.46426Penrose,Roger<1931- >Sciama,Dennis William<1928- >ITUNINARICAUNIMARCBK99000998300040332123-087.001DIPFIS 216FI1FI1Quantum gravity 21497216UNINA