000 003460000a22001330004500
008 140223b1959 xxu||||| |||| 00| 0 eng d
041 _aENG
080 _aD65:485e J96
082 _aD65:485e J96
100 _aNeeteson (P A)
245 _aVacuum valves in pulse technique edn 2 rev & encl
260 _c1959
650 _aEleectron Engineering
999 _c155264
_d155264