00370nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001500084245006100099250000800160260004000168300000800208650000800216221030s9999    xx            000 0 und d  a8178089955  aEnglish  a105.23bDod  aA. Z. Dodd 4aThe Essential guide to Telecommunicationscby A. Z. Dodd  a3rd  bPearson  EducationaNew Delhic2003  a500  aECE