linear density : 23 phrases in 13 subjects |
Chemistry | 2 |
Earth sciences | 3 |
Environment | 2 |
Fish farming pisciculture | 1 |
General | 1 |
Industry | 2 |
Magnetics | 2 |
Measuring instruments | 1 |
Physics | 1 |
Plastics | 1 |
Sound recording | 1 |
Technology | 5 |
Transport | 1 |