000 00310nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a541.224 C322
100 _aCARTMELL,E
245 0 _aVALENCY AND MOLECULAR STRUCTURE
260 _aLONDON
_bButterworth-Heinemann
_c1977
300 _a23X15
942 _cBK
_2DDC
999 _c17052
_d17052