Title: Stratigrafii︠a︡ , uslovii︠a︡ osadkonakoplenii︠a︡ i fauna ordovikskikh i nizhnedevonskikh otlozheniĭ Novoĭ Zemli, Vaĭgacha i Paĭ-Khoi︠a︡
Subjects: Stratigraphic Geology, Geology