00715nam0-22002531i-450-990001215660403321000121566FED01000121566(Aleph)000121566FED0100012156620000920d1976----km-y0itay50------baengGravitation and Relativityby Bowler,M.G .Oxford [etc.]Pergamon Press1976.International Series in Natural PhilosophyBowler,Michael George45218ITUNINARICAUNIMARCBK99000121566040332130-B-218825MA1MA1Gravitation and Relativity342777UNINAING01