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  1. Presmykaiushchiiasia (Reptilia) = Reptiles (Reptilia) / A.M. Nikolskii.
    By: Nikolskii, A. M.
    Publication info: Petrograd :Akademiia nauk,1915-1916.
    Contributed by: Smithsonian Libraries
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  2. Zemnovodn'iia (Amphibia) = Amphibiens (Amphibia) / A.M. Nikolskii.
    By: Nikolskii, A. M. - Rossiĭskai︠a︡ akademii︠a︡ nauk.
    Publication info: Petrograd :Akademiia Nauk,1918.
    Contributed by: Smithsonian Libraries
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