000 00458nam a22001577a 4500
008 230504b |||||||| |||| 00| 0 eng d
040 _aNational Science Library
_cNational Science Library
080 _a621.385.832
_bH1
100 _aEastman, Austin V
245 _aFundamentals of vaccum tubes
260 _aNew York:
_bMcgraw Hill Book Company, Inc.,
_c1941
300 _a583p.
650 _aScience
653 _aPhysics
942 _2udc
_cBK
999 _c40591
_d40591