000 00303 a2200133 4500
001 81523
082 _a004.6 SHA
090 _c39767
_d39767
100 _aShan
245 _aUnderstanding Data communication and network, 2/e
250 _a2
260 _aND
_bVikas Pub, ND
_c2001
300 _a711 p.
942 _aNUST-CAE
_k004.6 SHA
999 _c316596
_d316596