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Apparatus for photographic registration of heart sounds and the puls of veins and arteries, according to R. Ohm

Apparatur zur photographischen Registrierung des Herzschalles sowie Venen- und Arterienpulses nach R. Ohm

  Source   Zimmermann, E. 1928. Psychologische und Physiologische Apparate: Liste 50. Leipzig & Berlin (Collection Rand B. Evans) view the source
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ISSN 1866-4784: reference - xlink