АКТУАЛЬНЫЕ ПРОБЛЕМЫ СОВРЕМЕННОЙ НАУКИ

ACTUAL PROBLEMS OF MODERN SCIENCE

XXV Международная научно-практическая конференция, "30" октября 2017,
Санкт-Петербург – Астана – Киев – Вена
XXV International Scientific and Practical Conference, October 30, 2017,
Saint-Petersburg - Astana - Kiev - Vienna

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