000 00253nam a22000977a 4500
008 240615b |||||||| |||| 00| 0 eng d
100 _aSanjay Sharma
245 _aData Communication Networks
260 _aDelhi
_bS.K. Kataria Pub.
_c2007
942 _2ddc
_cBK
999 _c20726
_d20726