Title: Chetyre tovarishcha
Subjects: Ėkspedit︠s︡ii︠a︡ "Severnyĭ poli︠u︡s" (1937) http://id.loc.gov/authorities/names/n82059001, Ėkspedit︠s︡ii︠a︡ "Severnyĭ poli︠u︡s" (1937)
Places: Arctic regions
People: Ivan Dmitrievich Papanin (1894-1986), P. P. Shirshov (1905-1953), E. K. Fedorov (1910-1981)