St. Petersburg, Russia/stpet213
Previous | Home | NextTop half of the Periodic Table. The Russian caption at the top reads: "Periodic System of the Elements by D. I. Mendeleev."
St. Petersburg, Russia/stpet213Previous | Home | NextTop half of the Periodic Table. The Russian caption at the top reads: "Periodic System of the Elements by D. I. Mendeleev." |
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