00647nam a22001817a 450000500170000002000180001704000140003508200250004910000220007424501550009625000200025126000500027130000470032133600290036833700300039733800300042765000080045720220919122406.0  a9789696373254  aNabta-Lib40221a616.1207547bOJC1 aO'Keefe, James H. 4aThe Complete Guide to ECGs :bA Comprehensive Study Guide to Improve ECG Interpretation Skills /cJames H. O'Keefe, Stephen C. Hammill, Mark S. Freed.  aFourth Edition.  aPakistan :bJones & Bartlett Learning,c2017.  aXII, 748 Pages :bILLustrations ; c24 cm.  2rdacontent atext btxt   2rdamedia aunmediated bn  2rdacarrier avolume bnc   aECG