00536nam a22001817a 4500 CEME 20210628203124.0 210222b xxu||||| |||| 00| 0 eng d 3-7785-2527-1 . 621.3815 KIE Kiefer, Roland 63446 Test solutions for digital networks, basic principles and measurementtechniques for pdh, sdh, isdn and atm USA HUTHUNG VERLAG HEIDELBERG 1997 XII,282P DIGITAL NETWORKS 63447 BK ddc 572266 572266 0 0 0 0 CEME CEME GEN 2017-07-25 0 621.3815 KIE CEME-36568 2021-06-28 2021-06-28 BK