00613nam a22002057a 450000500170000001000130001702000250003003500130005503700160006804000120008408200150009610000200011124500640013126000360019527000520023130000250028350000520030865000140036065000330037420170124110209.0  aB-120659  c00.00a9798188689179  aB-120659  bCen Lib/Ret  aDPLbEN  a523.1bBER  aBerry, Michael   aPrinciples of cosmology and gravitation /cby Berry Michael  aNew DelhibOverseas Pressc2005  a7/28, Ansari Road, DaryaganjbNew Delhie110002  axi,179p. c21cm(pbk)  aIncludes bibliographical references and index    aCosmology  aGeneral relativity (Physics)