000 00298nam a2200121Ia 4500
008 221229s9999 xx 000 0 und d
082 _aQD399.A39-1968
100 _aA.R. Katritzky
245 0 _aAdvances in Heterocyclic Chemistry
260 _bElsevier
_aUSA
_c1968
300 _a491
942 _cBK
999 _c158976
_d158976