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Petrenko, Liudmyla
Petrenko, Liudmyla, TOV «STEM OSVITA» (Kharkiv, Ukraine)
Petrenko, Valentyna, Zinkiv Lyceum of Zinkiv city council, Poltava region (Zinkiv, Ukraine)
Polishchuk, Yaroslav, University of Adam Mickiewicz in Poznań (Poznań, Poland)
Prytula, Serhii, Borys Hrinchenko Kyiv University (Kyiv, Ukraine)
Pukhonska, Oksana, National University “Ostroh Academy” (Ostroh, Ukraine)
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