Template:Ivanov & Mjagkova, 1950

• Ivanov, A.N. & Mjagkova, E.I. 1950. Определитель фауны ордовика западного склона Среднего Урала [Keys to the Ordovician fauna of the western slope of the Middle Urals]. Trudy Gorno-Geologicheskogo Instituta Ural'skogo Filiala Akademii Nauk SSSR 18: 1–32. (Russian) Google Books  
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