 |
| |||
| audio-visual materials (Materials designed to make use of both hearing and sight); audiovisual aids | |||
| audio-visual | |||
| |||
| audio-visual materials (Materials designed to make use of both hearing and sight) | |||
| audio-visuel: 49 phrases in 11 subjects |
| Communications | 8 |
| Education | 19 |
| Environment | 2 |
| General | 7 |
| Health care | 1 |
| Information technology | 2 |
| Linguistics | 2 |
| Medical | 5 |
| Patents | 1 |
| Social science | 1 |
| United Nations | 1 |