003940a00a22001690004500020001800000245004000018250000800058100001800066100002000084260003600104260000900140300001300149082001600162760002500178015001100203887001000214  a0-443-04472-4  aTutorials in Differential Diagnosis  a3rd  aBeck, Eric, R  aFrancis, John L  bEdinburgh:Churchill Livingstone  c1992  a1-227pgs  a616-071 B21  bC 38-44 rack AV room  a003792  a100/=