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| English thesaurus | |||
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| RSA | |||
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Reference System : 31 phrases in 11 subjects |
| Automatic control | 1 |
| Communications | 9 |
| Electric motors | 1 |
| Electronics | 5 |
| Environment | 2 |
| Immigration and citizenship | 1 |
| Life sciences | 1 |
| Physical sciences | 1 |
| Research and development | 1 |
| Telephony | 4 |
| Transport | 5 |