TY  - BOOK
AU  - Duck,Michael
AU  - Read,Richard
TI  - Data communications and computer networks: for computer scientists and engineers 
SN  - 9780130930477
U1  - 004.6 21
PY  - 2009///
CY  - New Delhi
PB  - Pearson/Prentice Hall
KW  - Computer networks
KW  - OSI (Computer network standard)
KW  - Data transmission systems
N1  - Includes bibliographical references (p. 399-400) and index
ER  -