Optical radiation physics and illuminating engineering; quantities, symbols and units of illuminating engineeringPhysique de radiation optique et technique d'éclairage; grandeurs, symbols et unités de la technique d'éclairage
DIN 5031-3:1982 history
1982DIN 5031-3:1982-03 Optical radiation physics and illuminating engineering; quantities, symbols and units of illuminating engineering
1982DIN 5031-3:1982 Optical radiation physics and illuminating engineering; quantities, symbols and units of illuminating engineering
1970DIN 5031-3:1970 Optical radiation physics and illuminating engineering; quantities, symbols and units of illuminating engineering