00250nam a2200109Ia 4500008004100000041000800041082002300049100002000072245003100092260000900123300000800132211209s1976    xx            000 0 und d  aeng  a623.56 TRI N76 TRI  aTRICOMI, EARNOL  aABC'S OF AIR CONDITIONING   c1976  a128