00398cam a2200133ua 4500020002500000041001000025082001900035100003100054245009200085260006000177300001200237365001000249504000500259  a0-87692-244-2c49.00  aengh  a530.11bBER/IN  aBergmann, Peter Gabriel  .  aIntroduction to the theory of relativity / cPeter Gabriel Bergmann.hTextual Documents  aNew Delhi : bPrentice Hall of India Pvt Ltd. , c1987.  a287 ; .  a49.00  a