title: [Obstetric cardiophone].
mesh_terms: D001698:Biomedical Engineering; D005260:Female; D005318:Fetal Heart; D006801:Humans; D009774:Obstetrics / Q000295:instrumentation*; D010701:Phonocardiography / Q000295:instrumentation*; D011247:Pregnancy; D014586:USSR
vernacular_title: Akusherskiĭ kardiofon