Art
J-GLOBAL ID:201602020013297701   Reference number:58A0059319

Frequency-Division System for Pushbutton Telephone.

押しボタン式電話の周波数分割方式
Author (3):
Material:
Volume: 62  Issue:Page: 88-92,324-325  Publication year: 1958 
JST Material Number: B0437A  Document type: Article
Country of issue: United States (USA) 
Terms in the title (3):
Terms in the title
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