Jatsko, I.Ya. (1972). Nayady verkhnego kaynozoya yugo-zapada Ukrainy i Moldavii (opisaniye i stratigraficheskiye zametki [Naiads of the Upper Cenozoic in the south-west of Ukraine and Moldova (description and stratigraphic notes)]. Lvov State University, Lvov, 146 pp.
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Jatsko, I.Ya.
1972
Nayady verkhnego kaynozoya yugo-zapada Ukrainy i Moldavii (opisaniye i stratigraficheskiye zametki [Naiads of the Upper Cenozoic in the south-west of Ukraine and Moldova (description and stratigraphic notes)]