TY  - BOOK
AU  - Chapuis, Robert J.
TI  - HUNDRED YEARS OF TELEPHONE SWITCHING (1878-1978)
U1  - 621.385 
PY  - 1982///
CY  - Amsterdam
PB  - North-Holland
KW  - Telephone Stations -- History
N1  - Contents : Pt. 1. Manual And Electromechanical Switching (1878-1960s)
ER  -