 |
| manganese dioxide: 17 phrases in 8 subjects |
| Accumulators | 1 |
| Construction | 1 |
| Electrochemistry | 1 |
| Electronics | 1 |
| Makarov | 5 |
| Natural resourses and wildlife conservation | 2 |
| Solar power | 4 |
| Technology | 2 |
|
| manganese dioxide: 17 phrases in 8 subjects |
| Accumulators | 1 |
| Construction | 1 |
| Electrochemistry | 1 |
| Electronics | 1 |
| Makarov | 5 |
| Natural resourses and wildlife conservation | 2 |
| Solar power | 4 |
| Technology | 2 |