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024 _a59970
037 _cTextual
040 _aCSL
_beng
_cCSL
041 _aeng
082 _aD65:485, H41;3
100 _aReich H J
245 0 _aTheory and applications of electoron tubes
260 _c1949
300 _ap.
_ccm.
650 _aChemistry
942 _hD65:485, H41;3
_cTEXL
_2CC
999 _c80471
_d80471