TY  - BOOK
AU  - Stalngs,William
TI  - DATA AND COMPUTER COMMUNICATIONS
SN  - 9789332586932
U1  - 004.6 STA 
PY  - 2018///
PB  - Pearson 
UR  - http://www.amazon.com/exec/obidos/ASIN/B0047TDOSA/chopaconline-20
ER  -