000 00255nam a2200121Ia 4500
100 _aRyder/John D
942 _cBK
654 _anetworks
245 _aNetworks
260 _bprentice hall
_aNew Delhi
_c1988
082 _a621.3192
_bRYD
546 _aENGLISH
999 _c30073
_d30073