000 00321nam a2200133Ia 4500
008 241226s9999 xx 000 0 und d
020 _a0
082 _a621.3821
_bLEO
100 _aLeon A
245 0 _aCommunication network
260 _aNew Delhi :
_bTata Macgrow Hill,
_c2021.
350 _a275
650 _aManagement
999 _c165370
_d165370