TY  - BOOK
AU  - Parker,Sybil P.
TI  - Communications source book
SN  - 0070455104 :
AV  - TK5101 .C6588 1988
U1  - 621.38 19
PY  - 1988///
CY  - New York
PB  - McGraw-Hill
KW  - Telecommunication
N1  - Includes index: p351-359; Includes bibliographies and index
ER  -