vak: (Default)
Serge Vakulenko ([personal profile] vak) wrote 2019-02-21 08:31 am (UTC)

Менделеев несомненно был крутой чувак, но получается он не создавал периодическую систему, а развивал и дорабатывал уже имевшиеся.
(9 comments)

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