100 years of telephone switching (1878-1978)
Material type:
- 0-444-86289-7

Item type | Current library | Call number | Status | Barcode | |
---|---|---|---|---|---|
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National Science Library | 621/395(091) M2.1 (Browse shelf(Opens below)) | Available | 102578 |
Part1 Manual and electromechanical switching
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