621.3857 / H477
Hettwig, Emanuel
DIRECT DISTANCE DIALING
/
.- Munich: Siemens & Halske, 1964
.- 61 .
At Head Of The Title : Siemens
Subject Headings:
Telephone, Dial;
Copy Details:
Acc. No.: A24566, Full Call No.: 621.3857 H477, Item type: Books , Location: COMPACT STORAGE (BASEMENT),
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