TY  - BOOK
AU  - Gurrie,Michael L.
AU  - O'Connor,Patrick J.(Patrick Joseph)
TI  - Voice-Data telecommunications systems: an introduction to technology 
T2  - Career & technology
SN  - 0-13-943283-3
AV  - TK5101 G87
PY  - 1986///
CY  - Englewood Cliffs, N. J.
PB  - Prentice-Hall
N1  - Incluye bibliografia
ER  -