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reference materials : 32 phrases in 13 subjects |
Agriculture | 1 |
Commerce | 1 |
Earth sciences | 3 |
Energy industry | 2 |
Environment | 1 |
General | 5 |
Medical | 1 |
Metallurgy | 1 |
Natural sciences | 3 |
Nuclear physics | 4 |
Research and development | 3 |
Technology | 6 |
United Nations | 1 |