00321nam a2200133Ia 4500008004100000041000800041082001500049100000800064245003700072260003300109300000800142365001600150700002100166230718s9999    xx            000 0 und d  aeng  a004.6bNUL  a C.  aNetwork Administrators Reference  c1999bTata Mc-graw Hill Pub.  a740  cRs.b395.00  a C. & Parnell T.