00483nam a2200169Ia 4500008004100000020001500041082001700056100001900073245006000092250000600152260004600158300000800204650003400212650001800246653002700264653002200291170901s1976    xx            000 0 und d  a0471002682  a547.59bA18I  aAcheson, R. M. 0aIntroduction to the Chemistry of Heterocyclic Compounds  a3  aNew YorkbJohn Wiley and Sons, Inc.c1976  a501  aChemistry and allied sciences  aPure Sciences  aHeterocyclic compounds  aOrganic chemistry