00492nam a2200157Ia 4500008004100000022001700041040002500058082001700083100001800100245004200118260002800160942000700188942000700195952011500202999001700317240215s9999 xx 000 0 und d a9-71861369-2 aNORSU-DumcNORSU-Dum a004.6/H36/C2 a Gilbert Held 0aUnderstanding data communications/3rd bGlobal Publishingc1998 cBK yBK 00104070aNORSU-DumbNORSU-DumcCIRCULATION SECTIONd2024-02-15l0o004.6/H36/C2r2024-02-15w2024-02-15yBK c16546d16546