Vol 7, No 1 (2021)

Full Issue

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Table of Contents

Venera M. Timiryanova
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5-17
Yana Lopatkova
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18-27
Lu Jia Jin, Larisa P. Piskunova
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28-41
Rustem R. Akhunov, Azat V. Yangirov
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42-51
Qiujie Chen
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52-60
Faiza Shah, Yumin Liu, Yasir Shah, Fadia Shah
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61-67