00273nam a22001097a 4500003000400000008004100004082001700045100002000062245003900082260003400121300000800155OSt230911b        |||||||| |||| 00| 0 eng d  a547.5905 A23  aKatritzky, A.R.  aAdvances in Heterocyclic Chemistry  aI.B.H. PatnabAc. Pressc1978  a487