00435nam a2200145Ia 4500003000900000008004100009020001800050040001600068080001700084100002000101245009400121260004800215300001000263650001600273IN-BaIIA211028s9999    xx            000 0 eng d  a0-521-49518-0  cIIA Library  a524.882bFER  aFerguson, Kitty 0aPrisons of lightbblack holescKitty Ferguson                                              aCambridgebCambridge University Pressc1996  a214p.  aBlack holes