000 00338nam a2200145Ia 4500
008 240201s1982 xx 000 0 eng d
020 _a0582391601
082 _a521.58 ASI
100 _aASIMOV, ISAAC
245 0 _aHOW WE FOUND OUT ABOUT BLACK HOLES
260 _bLONGMAN
_c1982
300 _a52
650 _aSCIENCE
942 _2ddc
_cBK
999 _c5640
_d5640