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024 _a77557
037 _cTextual
040 _aCSL
_beng
_cCSL
041 _aeng
082 _aD65::4, J4
100 _aPierce J R
245 0 _aTheory and design of electron beams
250 _a2
260 _c1954
300 _ap.
_ccm.
650 _aElectronic engineering
942 _hD65::4, J4
_cTEXL
_2CC
999 _c38554
_d38554