000 00245nam a22001097a 4500
082 _a621.381535 LOW'S
100 _aSCHURA, A
_956600
245 _aLOW FREQUENCY AMPLIFIERS
260 _aNEWYORK
_bJOHN WILEY
_c1959
300 _a79P
942 _cBK
999 _c566981
_d566981