TY  - BOOK
AU  - Lewis, Geoff
AU  - Lewis, Geoff
TI  - Communications systems :  engineers' choices    
SN  - 9780240514949
AV  - 621.382 LEW 1999 
U1  - 621.382 LEW 1999 
PY  - 1999///
CY  - Oxford
PB  - �Focal Press
KW  - Communication Engineering
ER  -