| |||
| BK-System n (CE commission internationale d'Eclairage); Farbenskala f (CE commission internationale d'Eclairage) | |||
|
chromaticity scale : 4 phrases in 2 subjects |
| Earth sciences | 2 |
| Lighting other than cinema | 2 |
| |||
| BK-System n (CE commission internationale d'Eclairage); Farbenskala f (CE commission internationale d'Eclairage) | |||
|
chromaticity scale : 4 phrases in 2 subjects |
| Earth sciences | 2 |
| Lighting other than cinema | 2 |