TY  - BOOK
AU  - Foster, R.M.
TI  - The Bell System Technical Journal
U1  - 621.381 
PY  - 1961///
CY  - NEWYORK
PB  - AMERICAN TELEPHONE AND TELEGRAPH COMPANY
KW  -  ELECTRICAL ENGINEERING --PERIODICALS
KW  -  TELECOMMUNICATION --PERIODICALS
KW  -  THE BELL SYSTEM TECHNICAL JOURNAL
KW  - ELECTRONICS AND COMMUNICATION ENGINEERING
ER  -