Svitoch, A.A. (1967). Atlas-opredelitel' mollyuskov r. Didacna Eichwald iz chetvertichnyh otlozheniy Tsentral'nogo Prikaspiya [Atlas and Key to Mollusks of the Genus Didacna Eichwald from Quaternary Deposits of the Central Caspian Region]. Nedra, Moskva, 87 pp.
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Svitoch, A.A.
1967
Atlas-opredelitel' mollyuskov r. Didacna Eichwald iz chetvertichnyh otlozheniy Tsentral'nogo Prikaspiya [Atlas and Key to Mollusks of the Genus Didacna Eichwald from Quaternary Deposits of the Central Caspian Region]