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| English thesaurus | |||
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| TRAIL | |||
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Tertiary : 17 phrases in 12 subjects |
| Bioenergy | 1 |
| Biotechnology | 1 |
| Ecology | 1 |
| Economics | 1 |
| Environment | 4 |
| Food industry | 2 |
| Forestry | 1 |
| Health care | 1 |
| International Monetary Fund | 2 |
| Power lines | 1 |
| Research and development | 1 |
| United Nations | 1 |