000 00253cam a2200109 4500
020 _a0091317703 (hbk.)
100 1 _aAsimov Isaac
245 0 _aThe collapsing universe
260 _aLondon:
_bHutchinson,
_c1977
300 _a204p.
945 _i0010515
_rY
_sY
999 _c45836
_d45836