external element : 15 phrases in 11 subjects |
Building structures | 1 |
Chemistry | 1 |
Construction | 1 |
Criminal law | 1 |
Electrical engineering | 1 |
Energy industry | 1 |
Geophysics | 1 |
International Monetary Fund | 3 |
Nanotechnology | 1 |
Technology | 1 |
Telecommunications | 3 |