000 00282nam a2200121Ia 4500
100 _aChoudhury, D Roy
020 _a81-224-0002-7
942 _cBK
245 _aNetworks and systems
260 _aNew Age International, New Delhi
_c1988
082 _a001.64404 Cho
300 _axi,926
999 _c30304
_d30304