J-GLOBAL ID:201602008336300248   Reference number:57A0001292

Switching System 35 for Larger Tributary Offices.

大端局に対するWestan Union Telegraph会社35式中継系統
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Volume: 12  Issue:Page: 2-6  Publication year: 1958 
JST Material Number: Z0000A  Document type: Unknown
Country of issue: Other (ZZZ) 
Terms in the title (4):
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