Kropotkin, Petr Alekseevich, kni︠az︡ʹ, 1842-1921. | Vzaimnai︠a︡ pomoshchʹ kak faktor ėvoli︠u︡t︠s︡īi
VIAF ID: 185464281 ( Work )
Permalink: http://viaf.org/viaf/185464281
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Kropotkin, Petr Alekseevich,