000 00278nam a2200109Ia 4500
008 220729s1987 xx 000 0 und d
041 _aeng
100 _aLaurence D R
245 _aClinical electrocardiography
250 _a6
260 _aSingapore
_bChuachill Livingstone
_c1987
999 _c127853
_d127853