TY  - BOOK
AU  - Williams,Richard A.
TI  - Communication systems analysis and design: a systems approach 
SN  - 0131538756
AV  - TK5101 WIL 
PY  - 1987///
PB  - Prentice-Hall
KW  - Telecommunication systems
N1  - Includes bibliographical references and index
ER  -