descargas : 501 phrase in 39 subjects |
Accumulators | 1 |
Agriculture | 46 |
Chemistry | 14 |
Communications | 2 |
Construction | 2 |
Cultural studies | 3 |
Customs | 1 |
Earth sciences | 40 |
Economy | 1 |
Electric motors | 4 |
Electricity generation | 1 |
Electronics | 78 |
Energy industry | 6 |
Environment | 43 |
Finances | 8 |
Fish farming pisciculture | 1 |
General | 31 |
Health care | 1 |
Industry | 19 |
Information technology | 4 |
Isolation | 6 |
Life sciences | 4 |
Lighting other than cinema | 2 |
Magnetics | 2 |
Materials science | 25 |
Mechanic engineering | 54 |
Medical | 3 |
Metallurgy | 3 |
Microsoft | 9 |
Natural sciences | 11 |
Nuclear and fusion power | 1 |
Nuclear physics | 4 |
Radiology | 1 |
Semiconductors | 1 |
Statistics | 1 |
Technology | 7 |
Thermal Energy | 10 |
Transport | 45 |
Vacuum tubes | 6 |