Keywords: Beketov01.jpg Химик Риколай Бекетов 1880 PD-old original upload log page ru wikipedia Beketov01 JPG 2005-03-06 12 58 Octavium 147×200×8 7876 bytes <nowiki>beketov01</nowiki> House of Beketov People of Kharkiv 1827 births People of Penza Oblast 1911 deaths People of Saint Petersburg Scientists from Russia unidentified field |