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024 _a38682
037 _cTextual
040 _aCSL
_beng
_cCSL
041 _aeng
082 _aC51, J0
100 _aCosslett V E
245 0 _aIntroduction to electron optics: The production propagation and focusing of electron beans
250 _a2
260 _c1950
300 _ap.
_ccm.
650 _a Physics
650 _aLight
942 _hC51, J0
_cTEXL
_2CC
999 _c89911
_d89911