00310nam a2200133Ia 4500008004100000100001700041245003300058250001200091260003000103300000800133650001300141942000700154999001500161190216s9999||||xx |||||||||||||| ||und||  aJohn D Ryder 0a"Networks, Lines And Fields"  a2nd Ed.  bPrentice Hall Indiac1990  a593  aComputer  cBK  c8400d8400