00461nam a2200157Ia 4500003000900000008004100009020001800050040001600068080001700084100001900101245010600120260004200226300001600268650001000284650000900294IN-BaIIA211028s9999    xx            000 0 eng d  a0-19-564211-2  cIIA Library  a524.834bHAW  aPenrose, Roger 0aNature of space and timecStephen Hawking and Roger Penrose                                            aOxfordbOxford University Pressc1998  aviii, 141p.  aSpace  atime