00425nam a2200133Ia 4500008004100000041000800041082002300049100001700072245005500089260000900144300000800153952011300161999001700274211209s1978    xx            000 0 und d  aeng  a621.385483 N78 LEN  aLENK, JOHN D  aHAND BOOK OSCILLOSCOPES : THEORY AND APPLICATIONS   c1978  a212  00104070aRITbRITd2021-12-31g1950.00l0o621.385483 N78 LENp11244r2021-12-31 00:00:00w2021-12-31yBK  c11244d11244