000 00293nam a2200097Ia 4500
008 120224s9999 xx 000 0 und d
082 _a512.22
_bLED
100 _aLederman, Walter
245 _aIntroduction to the group charecters
260 _bcambridge University Press
_aCambridge
_c1977
999 _c141799
_d141799