00466nam a2200157Ia 4500003000900000008004100009020001800050040001600068080001500084100001800099245010200117260004800219300001500267650001200282650001400294IN-BaIIA211028s9999    xx            000 0 eng d  a0-7167-5016-3  cIIA Library  a531.5bWHE  aWheeler, J. A 2aA journey into gravity and spacetimecJ. A Wheeler                                                 aNew YorkbScientific American Libraryc1990  axii, 257p.  aGravity  aSpacetime