Title: Akademiku Dmitrii︠u︡ Stepanovichu Beli︠a︡nkinu k semidesi︠a︡tiletii︠u︡ so dni︠a︡ rozhdenii︠a︡ i sorokapi︠a︡tiletii︠u︡ nauchnoĭ dei︠a︡tel'nosti
Subjects: Geology
People: D. S. Beli︠a︡nkin (1876-1953)