Geologicheskīi︠a︡ izsli︠e︡dovanīi︠a︡ v si︠e︡vernom Urali︠e︡ v 1887-1889 g.
(otchet o di︠e︡i︠a︡telʹnosti geologicheskoĭ partīi Si︠e︡vernoĭ ėkspedit︠s︡īi)
E. S. Fedorova.

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