Science XXI century - Valentina Ponikarova, Lyudmila Zolotova, Yelena Shirinkina - e-kniha

eBook: Proceedings includes materials of the international scientific conference «Science XXI century», held in Czech Republic, Karlovy Vary-Russia, Moscow, April 29-30, 2019. The main objective of the conference - the development community of scholars and practitioners in various fields of science. Conference was attended by scientists and experts from Azerbaijan, Belarus, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Ukraine.