000 00476nam a2200181Ia 4500
003 IN-BaIIA
008 211028s9999 xx 000 0 eng d
040 _cIIA Library
080 _a621.3.049
_bWIL
100 _aWilliams, Emrys
_98175
245 0 _aThermonic value circuits
_cEmrys Williams
260 _aLondon
_bSir Isaac Pitman and Sons
_c1952
300 _axi, 314p.
650 _aElectronics
_91576
650 _aNASA Thesaurus
650 _aValves
_92259
942 _cBK
999 _c4627
_d4627