00304nam a2200133 a 450000500170000002000150001708200160003210000220004824500220007025000110009226000350010330000170013863000150015520251202164125.0  a0045210039  a530.11bRUS  aRussell, Bertrand  aABC of relativity  a4th ed  aLondonbUnwin Paperbacksc1985  a155 p.b22cm  aRelativity