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Khalfin, L. L. (1939). Materialy dlya izucheniya fauny peletsipod kol'chuginskoy svity Kuznetskogo kamennougol'nogo basseyna [Materials for studying the fauna of pelecypods of the Kolchugin Formation of the Kuznetsk Carboniferous Basin]. Trudy Tomskogo industrialnogo instituta. 60(1): 14–94.
Khalfin, L. L. (1939). Materialy dlya izucheniya fauny peletsipod kol'chuginskoy svity Kuznetskogo kamennougol'nogo basseyna [Materials for studying the fauna of pelecypods of the Kolchugin Formation of the Kuznetsk Carboniferous Basin]. Trudy Tomskogo industrialnogo instituta. 60(1): 14–94.
