TY  - BOOK
ED  - AMERICAN TELEPHONE AND TELEGRAPH COMPANY
TI  - The Bell System Technical Journal VOL. 41, Part 2, 1962
U1  - 621.381 
PY  - 1962///
CY  - NEWYORK
PB  - AMERICAN TELEPHONE AND TELEGRAPH COMPANY
KW  -  TELEGRAPH
KW  -  TELEPHONE
KW  - ELECTRICAL COMMUNICATION
ER  -