00449nam a2200193Ia 4500008004100000041001200041082000800053082001100061100001700072100001100089245004000100260001300140260002400153260000900177300001500186365002500201650001300226650001600239150909s9999 xx 000 0 und d aEnglish a547 bLED/OR aLednicer D  eAuthor aOrganic chemistry of drug synthesis aNew York bJohn Wiley and Sons c1977 a471 Pages aRs.22.50  aMorphine aPenicillins