 |
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| Kupferoxydul n | |||
| Kupferoxid n; Kupferoxyd n | |||
| Kupferii-oxid n | |||
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| Kupferoxyde n; Kupferoxyd n; Kupferoxydul n | |||
| oxyde de cuivre: 20 phrases in 6 subjects |
| Accumulators | 1 |
| Chemistry | 13 |
| Electrochemistry | 1 |
| Electronics | 2 |
| Metallurgy | 2 |
| Natural resourses and wildlife conservation | 1 |