TY  - GEN
AU  - Hills, M.T.
TI  - Telecommunications switching principles
SN  - 9780262582476 (pbk.)
AV  - TK6397 .I52 1978
U1  - 621.38 
PY  - 1982///
CY  - Cambridge
PB  - The MIT Press, 
KW  - Software engineering
KW  - Telephone switching systems, Electronic
N1  - Includes references ; appendices & index
ER  -