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| English thesaurus | |||
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| R (ISDN) | |||
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R : 59 phrases in 20 subjects |
| American usage, not spelling | 1 |
| Analytical chemistry | 5 |
| Antennas and waveguides | 5 |
| Chemistry | 3 |
| Computers | 1 |
| Criminal law | 1 |
| Electronics | 2 |
| Environment | 2 |
| General | 7 |
| Health care | 3 |
| Law | 1 |
| Life sciences | 12 |
| Magnetics | 1 |
| Mathematics | 2 |
| Microsoft | 3 |
| Patents | 2 |
| Radio | 1 |
| Research and development | 1 |
| Statistics | 1 |
| Vacuum tubes | 5 |