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Tschernyschew B.I. (1931). Carbonicola, Anthracomya and Najadites of the Donetsk Basin. Transactions of the Geological and Prospecting Service of USSR. 72: 1-125. [in Russian].
Tschernyschew B.I. (1931). Carbonicola, Anthracomya and Najadites of the Donetsk Basin. Transactions of the Geological and Prospecting Service of USSR. 72: 1-125. [in Russian].
