000 00298nam a2200133Ia 4500
100 _aRyder, J
020 _a81-203-0299-0
250 _a2nd
942 _cBK
245 _aNetworks lines & filds
260 _aPremtice- Hall of India, New Delhi
_c1997
082 _a621.3851 Ryd
300 _axi;593
999 _c23499
_d23499