00342nam a2200145Ia 4500008004100000020001300041041000800054082001600062100002000078245002400098250000600122260004600128300001300174650000900187210716s1989    xx            000 0 und d  a71003800  aeng  a004.68 KEIG  aKeiser, Gerd E.  aLocal area network.  a1  aNew YorkbMc Graw Hill Book Companyc1989  axvii,420  aNone