title: [The 50th anniversary of the October revolution and the problems of longevity].
mesh_terms: D003710:Demography / Q000266:history*; D049673:History, 20th Century; D006801:Humans; D008136:Longevity / Q000266:history*; D014586:USSR
vernacular_title: 50-letiie Oktiabria i problma dolgoletiia.