TY  - BOOK
AU  - GUPTA, PRAKASH C.
TI  - DATA COMMUNICATIONS
SN  - 8120311183
U1  - 621.382/GUP 
PY  - 2004///
CY  - NEW DELHI.
PB  - PRENTICE HALL OF INDIA PVT. LTD., NEW DELHI.
ER  -