Communication | 2 | |
Buildings | 2 | |
Safety | 2 | |
Transportation | 2 | |
Energy | 1 | |
Human Health | 1 | |
Radiation | 1 | |
Sanitation | 1 |
1 | 1 | 2 |
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SPRING | 1 | |
SUMMER | 1 |
Afghanistan | 1 | |
Russia | 1 | |
United States | 1 |