En
Ru| Title | The book by Pyotr Grigoryevich Volkonsky "Essays of social hygiene" (Essais d'hygiene sociale) |
|---|---|
| Series | 1783-1917 |
| Fonds | Volkonsky, light princes: Peter Mikhailovich (1776-1852), General Field Marshal, Minister of Imperial Court and Ducks;Dmitry Petrovich (1805-1859), gofmaster;Grigory Petrovich (1808-1882), Trustee of the Odessa and St. Petersburg educational districts;Peter G. |
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