
Certificate slideshow
Credit: Alexander Krivosheya Taken: 10-01-2019 Copyright: all right reserved Location: Odessa, Ukraine Keywords: scientist, researcher, Seminar, Oleg Maltsev
Credit: Alexander Krivosheya Taken: 10-01-2019 Copyright: all right reserved Location: Odessa, Ukraine Keywords: scientist, researcher, Seminar, Oleg Maltsev