000 00291nam a2200109Ia 4500
008 190914s9999||||xx |||||||||||||| ||und||
100 _aJ.E. Flood
245 0 _aTelecommunications Switching, Traffic and Networks
260 _aNew Delhi
_bTata McGraw Hill
_c1990
300 _a321
942 _cBK
999 _c9563
_d9563