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guideline level | |||
datum level; stage datum | |||
protective action level | |||
reference datum |
nivel de referencia: 16 phrases in 10 subjects |
Economy | 1 |
Environment | 1 |
General | 1 |
Information technology | 3 |
Life sciences | 2 |
Meteorology | 3 |
Pest control | 1 |
Surveying | 1 |
Technology | 1 |
United Nations | 2 |