| English thesaurus | |||
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| sptr | |||
| spec | |||
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| Solar probe experiment created for technological research by the University of Michigan | |||
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Spectrum : 15 phrases in 8 subjects |
| Communications | 6 |
| Environment | 1 |
| General | 2 |
| Health care | 1 |
| Law | 2 |
| Microsoft | 1 |
| Natural sciences | 1 |
| Physical sciences | 1 |