Valentin Popov
Valentin Popov (1937, Ukraine) - hab. Doctor of physics, professor of Riga Technical University, professonal musician-singer (lyric-dramatic tenor).
Valentin Popov https://sites.google.com/site/vipopovsen/
Valentin Popov (1937, Ukraine) - hab. Doctor of physics, professor of Riga Technical University, professonal musician-singer (lyric-dramatic tenor).
Valentin Popov https://sites.google.com/site/vipopovsen/