Eмисия новини
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Alexander Kabranski (L) and Stefania Lazarova

Two secondary school students win prize for developing biodegradable mask

Two students from the Natural Sciences and Mathematics Secondary School in Yambol won a Bulgarian Academy of Sciences’ student institute prize for developing a biodegradable protective face mask out of rice paper and with hemp straps. The..

05.01.22 16:40 |
Всички новини: днес | вчера

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Войната в Украйна