000 00276nam a2200109Ia 4500
008 220204s9999 xx 000 0 und d
082 _a547
_bBYK
100 _aG V
245 0 _aElectronic changes of bonds in organic compounds
260 _aOxford
_bPergamon
_c1964
942 _cBK
999 _c20602
_d20602