22.04 - Ден на планетата Земја/ Earth Day
Научен фестивал 4/
The festival took place from April 22 to May 2, lasting for 5 school periods — one period in each of 5 classes.
Научен фестивал 4/
The festival took place from April 22 to May 2, lasting for 5 school periods — one period in each of 5 classes.
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