00245nam a22000857a 4500082002700000100001200027245004800039260003500087526003700122  a621.56bSEVcL-8, P-19  aSeverns  aAir Conditioning and refrigerationcSeverns  aLondonbJhon Wiley & Sons, Inc  a0b0c0d621_560000000000000_SEV