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M. D.  Ruzsky, ?The ants of Russia. (Formicariae Imperii Rossici). Systematics, geography and data on the biology of Russian ants. Part I. [Murav'i Rossii (Formicariae Imperii Rossici). Sistematika, geografija i dannye po biologii russkikh murav'ev. Chast' 1]?, Trudy Obshchestva Estestvoispytatelei pri Imperatorskom Kazanskom Universitete, vol. 38, no. 4-6, pp. 1-800, 1905.