Stamps, scientists (1951) design type
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Russia
postage1951, Aug 15 scientists (1951) unwmk p. 12 (16 stamps)
| X | 40k | bl | D.I. Mendeleev | |||
| X | 40k | brn | Timiryasev | |||
| X | 40k | brnblk | Tsiolkovsky | |||
| X | 40k | vio | Kovalevskaya | |||
| X | 40k | dkbl | Kovalevski | |||
| X | 40k | grn | A.N. Lodygin | |||
| X | 40k | grayblk | Yablochkov | |||
| X | 40k | orgred | Butlerov | |||
| X | 40k | vio | Krascheninnikov | |||
| X | 40k | brn | Lobachevsky | |||
| X | 40k | orgred | Miklukho-Maklai | |||
| - | 40k | grn | Stoletov | |||
| X | 40k | Alexey Svertzov | ||||
| X | 40k | Kurnakov | ||||
| X | 40k | Lebedev | ||||
| X | 40k | Kozlov |
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