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Facebook: chubrik
Twitter: @iChubrik
Websites (russian):
 Classic in mp3 — open archive (author)
“Senar” // S. V. Rachmaninov — (coauthor)
Sintez-Electro Ltd. — (webmaster)
Nikolai Chubrik — father
VK groups (russian):
Sergei Vasilyevich Rachmaninov — (coadmin)
Finale—music notation — (admin)
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