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retención : 126 phrases in 27 subjects |
Agriculture | 9 |
Animal husbandry | 1 |
Chemistry | 5 |
Communications | 11 |
Construction | 1 |
Earth sciences | 10 |
Economy | 1 |
Electric motors | 1 |
Electronics | 4 |
Environment | 3 |
Finances | 4 |
Industry | 4 |
Information technology | 6 |
Insurance | 4 |
International trade | 1 |
Law | 6 |
Life sciences | 5 |
Materials science | 1 |
Mechanic engineering | 21 |
Medical | 5 |
Microsoft | 5 |
Natural sciences | 2 |
Power system protection | 1 |
Social science | 3 |
Taxes | 2 |
Telecommunications | 3 |
Transport | 7 |