000 00570 a2200241 4500
001 311209
020 _a
041 _aeng
080 _aLNASA TN D 8295 : 1976
245 _aSurface studies of thermionic cathodes and the mechanism of operation of an impregnated tungsten cathode
250 _a
260 _aWashington, D.C.
260 _bNASA
260 _c1976
300 _a30 p.
300 _c
856 _uNASA
490 _aNASA TN D 8295 : 1976
700 _a
650 _a
650 _aCathodes, Thermionic cathodes, Electron emission
942 _cPP
942 _2UDC
999 _c259605
_d259605