000 00279nam a2200109Ia 4500
008 200302s9999 xx 000 0 und d
100 _aIstvan Hargittai and others
245 _aSmmetry A Unifying Concept
260 _bShlter Publication Inc.,
260 _c1994
300 _a222 P.,
999 _c5695
_d5695