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XLII International Scientific and Practical Conference "Actual problems of modern science" 06/27/2019 (Joint conference with the International Scientific Centre)
XLII International Scientific and Practical Conference "Actual problems of modern science" 06/27/2019 (Joint conference with the International Scientific Centre)
Actual problems of modern science: Abstracts of XLІІ International scientific-practical conference (Saint Petersburg - Astana - Kyiv - Vienna, June 27, 2019)