TY  - BOOK
AU  - Smol,G.
AU  - Hamer,Malcolm P.R.
AU  - Hills,M.T.
TI  - Telecommunications: a systems approach 
SN  - 0046210229 :
AV  - TK5101 .S574
U1  - 621.38 
PY  - 1976///
CY  - London
PB  - Allen and Unwin
KW  - Telecommunication
KW  - Telephone systems
KW  - Television
ER  -