TY  - BOOK
AU  - Gayler, Winston D.
TI  - TELEPHONE VOICE TRANMISSION STANDARDS AND MEASUREMENT
SN  - 0139027769
U1  - 621.385 
PY  - 1989///
CY  - Englewood Cliffs
PB  - Prentice Hall
KW  - Telephone -- Standards
ER  -