00400nam a2200145Ia 4500008004100000020001500041041001200056082001600068100001800084245008000102250000800182260004500190300000700235650001200242221030s9999    xx            000 0 und d  a0750670649  aEnglish  a105.23bVal  aV. Valkenburg 0aRefrence Data For Engineers : Radio, Electronics, Computer, & Communication  a8th  bNewnes, Butterworth, WoburnaIndiac2001  a49  aGeneral