TY  - BOOK
T1  - A history of engineering and science in the Bell System:switching technology, 1925-1975 /
DA  - 1982.
CY  - [New York] :
CN  - TK6397 .J64 1982
CN  - TK6397
PB  - Bell Telephone Laboratories,
PP  - [New York] :
PY  - 1982.
N1  - Includes index.
ID  - 68138
KW  - Telephone
KW  - Telecommunication
SN  - 0932764029
TI  - A history of engineering and science in the Bell System:switching technology, 1925-1975 /
ER  -