barriär | |
environ. | mur |
transp. | ligne écran |
absorberande: 31 phrases in 14 subjects |
Agriculture | 1 |
Chemistry | 1 |
Communications | 2 |
Earth sciences | 2 |
Environment | 1 |
General | 3 |
Health care | 3 |
Industry | 8 |
Information technology | 1 |
Life sciences | 1 |
Materials science | 2 |
Mathematics | 4 |
Radio | 1 |
Statistics | 1 |