000
00293nam a2200121Ia 4500
008
180721s9999 xx 000 0 und d
100
_a
William Stallings
245
0
_a
Data and Computer communication
260
_b
PHI Learning Pvt. Ltd
260
_c
2000
365
_b
250.00
942
_c
BK
999
_c
140772
_d
140772