00268nam a2200097 a 450000500170000008200230001710000230004024500540006326000360011730000170015320251203090532.0  a616.10754,bD, PER  aPerloff, Joseph K.  aPhysical examination of the heart and circulation  aPhiladephiabW.B.Saundersc1982  ax,278p, 20cm