00409nam a2200193Ia 4500008004100000082000800041082000800049100001800057245003000075250001200105260002800117260000900145300001300154365000800167365001100175365000600186365000800192650001500200181031s9999    xx            000 0 und d  a808  bHAW  aPenrose Roger  aNature of Space and Time.  aRev.ed.  bOxford University Press  c1997  aix,141p.  b175  cRupees  d0  e156  aLiterature