TY  - BOOK
AU  - Gurrie, Michael L.
TI  - Voice/data telecommunications systems
SN  - 0139432833
U1  - 621.38 GUV 
PY  - 1986///
CY  - Englewood Cliffs, N.J
PB  - Prentice-Hall
KW  - Data telecommunication
ER  -