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020 _a9780631187851
082 _a170
_bPET.C
100 _aPETER SINGER Ed
245 _aCOMPANION TO ETHICS
_bBLACKWELL COMPANIONS TO PHILOSOPHY
260 _aUK
_bBLACKWELL
_c1991
942 _cBK
999 _c472317
_d472317