Piskun, 1974a
From dinoflaj2
Piskun, L.V., 1974a: Veryhachium iz Ordovika i Silura Brestskoy Vpadiny. In: Mikrofitofossilii Proterozoya i Rannego Paleozoya SSSR, p.15-20, pl.1-9; Akademiya Nauk SSSR, Leningrad, Russia.
Piskun, L.V., 1974a: Veryhachium iz Ordovika i Silura Brestskoy Vpadiny. In: Mikrofitofossilii Proterozoya i Rannego Paleozoya SSSR, p.15-20, pl.1-9; Akademiya Nauk SSSR, Leningrad, Russia.
