100 Years of Telephone Switching: 1878-1978. Manual and electromechanical switching (1978-1960s). - 1982. - (... ; 1). 1
- ISBN-10
- 0444862897
- ISBN-13
- 9780444862891
- Pages
- 482
- Language
- English
- Published
- 1960
- Publisher
- North-Holland
- Author
- Robert J. Chapuis
