000 00255nam a2200097Ia 4500
008 220204s9999 xx 000 0 und d
082 _a547.7
_bADV.19
245 0 _aAdvances in heterocyclic chemistry. V 19
260 _aNew York
_bAcademic
_c1976
942 _cBK
999 _c27935
_d27935