Keywords: Дмитрий Иванович Менделеев 5.gif A portrait of Russian chemist Дмит� ий Иванович � енделеев Dmitri Ivanovich Mendeleyev February 1834 2 Feb 1907 Source http //www dyett cps k12 il us/science/periodictable/periodictable htm PD-old Dmitri Mendeleev |