00334nam a2200133Ia 4500001000500000005001700005008004100022020001500063082001500078100002100093245003400114260001800148650003400166468920261006003812.0120911s9999    xx            000 0 und d  a0078822289  a004.67 PAR  a Parnell , tere   a Guide to wide area networks   a Mcgraw hill   a Internet (computer network)