00358nam a2200121   4500008004100000020001500041050002400056100002500080245004700105260003900152300002900191650001600220150829b        xxu||||| |||| 00| 0 eng d  a1575728087  aQB 843 .B55088 1999  aOxlade, Chris.d1999  aThe mystery of black holes/cChris, oxlade  aChicago.:bHeinmann Library.c1999  a32p.:illbIncludes index  aBlack Holes