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  1. By: Pol︠i︡akov, G. I. (Grigoriĭ Izrailevich)
    Publication info: Moskva G.I. Poli͡akov 1910-
    Holding Institution: Multiple institutions
  2. By: Pol︠i︡akov, G. I. (Grigoriĭ Izrailevich) - Velizhanin, A. P.
    Publication info: Moskva, Ornitologicheskiĭ vi͡estnik, 1915
    Holding Institution: Smithsonian Libraries and Archives