000 00308nam a2200133Ia 4500
008 170820s9999 xx 000 0 und d
100 _aSTALLINGS,WILLIAM
245 0 _aCOMMUNICATIONS
250 _aN/A
260 _c2009
_aNEW DELHI
300 _a1
999 _c62559
_d62559
005 20230827220655.0
040 _cCentral Library,YSM