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Bulgarian secondary school students are in the world natural sciences elite

“It is only natural for China and India to win gold medals at physics and astrophysics Olympiads, after all 20% of the world’s population lives there, but it is supernatural for small Bulgaria to be right there, next to them...

31.10.20 09:35 |
Всички новини: днес | вчера

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Войната в Украйна