TY  - BOOK
AU  - Redmil F J
AU  - Valdar  A R
TI  - SPC Digital Telephone Exchanges ;Rev Ed
SN  - 0000042227
U1  - . 
PY  - 1990///
CY  - Landon
PB  - Peter Peregrins
KW  -  Ed.
KW  -  Exchanges
KW  -  Rev
KW  -  SPC
KW  -  Telephone
KW  - Blank
KW  - Digital
ER  -