Sarv, L.I. (1968a) Ostracode families Craspedobolbinidae, Beyrichidae and Primitiopsidae in the Silurian of Estonia. Akad.Geol.Inst., Tallin, 1–102 pp.
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Sarv, L. I.
1968
Ostracode families Craspedobolbinidae, Beyrichidae and Primitiopsidae in the Silurian of Estonia