01089nam2-2200301li-450-9900001863502033160018635USA010018635(ALEPH)000018635USA01001863520001109d1984----km-y0itay0103----baengGBSix-membered rings with oxygen, sulfur or two or more nitrogen atomseditors A. John BoultonPt. 2BXIV, 1210 paltro genere00100186252001Comprehensive heterocyclic chemistrythe structure, reactions, synthesis and uses of heterocyclic compoundschairman of the editorial board Alan R. Katritzky, co-chairman of theeditorial board Charles W. ReesBoulton,A. JohnSistema bibliotecario di Ateneo dell' Universit� di SalernoRICA990000186350203316547.59 COM 3/2B0012795BKSCI1991101420001110USA01171320020403USA011626PATRY9020040406USA011613UNISA