000 00543cas a2200181 4500
001 0000004560
005 20231211133301.0
035 _a0000010026
041 1 _aeng
099 _a4577
110 2 _aNetherlands.
_bPhilips.
245 1 0 _aPhilips research reports. :
_bA scientific journal of theoretical and experimental research in physics,chemistry and allied fields.
260 _aEindhoven :
_bPhilips,
_c1947.
300 _av. :
_bgráficos ;
_c23 cm.
505 8 _aV.2 N.1 February 1947.
505 8 _aV.2 N.3 June 1947.
908 _a090330
999 _c1113
_d1113