TY  - BOOK
AU  - Richards,D.L.
TI  - Telecommunication by speech: the transmission performance of telephone networks
SN  - 040870344x
U1  - 621.387 
PY  - 1973///
CY  - London
PB  - Butterworths
KW  - Telecommunication systems
KW  - Telecommunication lines
KW  - Telephone lines
N1  - Includes index; Bibliography: p. 529-577
ER  -