Art
J-GLOBAL ID:201602018534264821   Reference number:58A0058594

Trends in Post Office telephone-exchange equipment.

電話交換装置の傾向
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Material:
Volume:Issue: 49  Page: 10-17  Publication year: 1959 
JST Material Number: D0383A  CODEN: JIEEA  Document type: Article
Country of issue: United Kingdom (GBR) 
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