TY  - BOOK
AU  - Shelly,Gary B.
AU  - Cashman,Thomas J.
AU  - Serwatka,Judy A.
TI  - Business data communications: introductory concepts and techniques 
T2  - Shelly Cashman series
SN  - 9780789568069 (paperback)
PY  - 2004///
CY  - Cambridge, Massachussets
PB  - Course Technology
KW  - Data transmission systems
N1  - Previous edition : 2001; Includes bibliographical references and index
ER  -