00603cam a22002171  4500001001300000003000400013005001700017008004100034010001700075035002000092040001900112042001200131050002000143060002300163100005800186245006000244250001500304260003300319300001600352999001700368med47001960 DLC20260227111604.0810815s1947    xx a          000 0 eng    amed47001960   a(OCoLC)14748901  aDLCcDNLMdDLC  apremarc00aRC683b.R5 19470 aWG 140bR595p 19471 aRiseman, Joseph E. F.q(Joseph Ephraim Frank),d1903-10aP-Q-R-S-T, a guide to electrocardiogram interpretation.  a2d ed. ...  aNew York,bMacmillan,c1947.  a84 p.bill.  c38476d38476