TY  - BOOK
AU  - Beyda, William J
TI  - Data Communications : from basics to broadband (Fourth edition)
SN  - 9780131456921
AV  - TK 105 Bey 
PY  - 2005///
CY  - New Jersey
PB  - Pearson Education, Inc
KW  - DATA TRANSMISSION SYSTEMS
ER  -