000 00516nam a2200193Ia 4500
003 IN-BaIIA
008 211028s9999 xx 000 0 eng d
040 _cIIA Library
080 _a621.385.1
_bHAL
100 _aHallows, R. W
_93419
245 0 _aIntroduction to valves
_cR. W. Hallows and H. K. Milward.
260 _aLondon
_bIliffe & Sons
_c1953
300 _a152p.
650 _aNASA thesaurus
650 _aNumotic circuits
_93420
650 _aValves
_92259
700 _aMilward, H. K.
_93421
942 _cBK
999 _c1753
_d1753