second order | plotting instrument
| plotting instrument abbr. | |
| earth.sc. life.sc. | stereoinstrument |
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| SO | |||
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second order : 14 phrases in 7 subjects |
| Earth sciences | 1 |
| Electronics | 1 |
| Information technology | 3 |
| Mathematics | 6 |
| Natural sciences | 1 |
| Scientific | 1 |
| Statistics | 1 |