00956nam0-22002891i-450-99000006527040332120061205152555.0000006527FED01000006527(Aleph)000006527FED0100000652720020821d1923----km-y0itay50------bafrey-------001yyRecueil des travaux et compte rendu des seancesCommission internationale de l'eclairageen succession a la Commission internationale de photometrie, 5. session, Paris, jullet, 1921TeddingtonNational physical laboratory1923224 p.ill.24 cmIlluminazioneCongressi1921CongressiParigi1921621.322International Commission on IlluminationITUNINARICAUNIMARCBK99000006527040332113 G 02 175414FINBCFINBCUNINA