00653nam0-22002411i-450-990001244490403321000124449FED01000124449(Aleph)000124449FED0100012444920000920d1920----km-y0itay50------baengRelativityThe Special and the General TheoryBY ALBERT EINSTEINLondonMethuen1920Einstein,Albert<1879-1955>690ITUNINARICAUNIMARCBK99000124449040332129-L-302423MA1MA1Relativity353677UNINAING01