title: [The 50th year of the Great October Socialist Revolution].
mesh_terms: D003148:Communism / Q000266:history; D049673:History, 20th Century; D011635:Public Health Administration / Q000266:history*; D014586:USSR
vernacular_title: 50 let Velikoĭ Oktiabr'skoĭ sotsialisticheskoĭ revoliutsii.