Sokhranenie i razvitie uma i ėnergii
Subtitle: psikhicheskai︠a︡ gigiena, obshchedostupno izlozhennai︠a︡ po sochinenii︠a︡m Boka, Bekkereli︠a︡, Frebeli︠a︡ i dr
Edition: 3. ispr. i dop. izd.
Publisher: Ḟ.I. Surin
Published: 1884
Place of publication: St.-Peterburg
Language: rus
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