Art
J-GLOBAL ID:201602019788448180   Reference number:58A0062084

Transistor Unit Detects Foetal Heart Sounds.

胎児の心音を聞くトランジスタ聴診器
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Material:
Volume: 31  Issue: 17  Page: 52-53  Publication year: 1958 
JST Material Number: B0455B  ISSN: 0013-5070  CODEN: ELECA  Document type: Article
Country of issue: United States (USA) 
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