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. 1952 Apr;14(2):271–275. doi: 10.1136/hrt.14.2.271

AN ELECTRONIC PHONOCARDIOGRAPH EMPLOYING A DOUBLE-BEAM CATHODE-RAY OSCILLOGRAPH AS THE RECORDING DEVICE

F W Campbell ¹, A W Sloan ¹, A M Andrew ¹

PMCID: PMC479450 PMID: 14916069

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

COWEN E. D. H., PARNUM D. H. The phonocardiography of heart murmurs; apparatus and technique. Br Heart J. 1949 Oct;11(4):356–359. doi: 10.1136/hrt.11.4.356. [DOI] [PMC free article] [PubMed] [Google Scholar]

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