World Metrology Day 2020
E967368
UNEXPLORED
World Metrology Day 2020 was the annual international celebration highlighting the importance of measurement science in technology, trade, and daily life, held on 20 May 2020.
All labels observed (1)
| Label | Occurrences |
|---|---|
| World Metrology Day 2020 canonical | 1 |
Referenced by (1)
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