title: [Evaluation of functional state of heart muscle basing on policardiographic studies in the PKP workers (author's transl)].
mesh_terms: D000328:Adult; D004562:Electrocardiography; D006321:Heart / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D009787:Occupational Medicine; D010701:Phonocardiography; D011674:Pulse; D011890:Railroads
vernacular_title: Ocena stanu czynnościowego mieśnia serca na podstawie badań polikardiograficznych u pracowników PKP.