[250th anniversary of the USSR Academy of Sciences].
D000047:Academies and Institutes / Q000266:history*; D001695:Biology / Q000266:history*; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D012425:Russia (Pre-1917); D014586:USSR
250-LETIE Akademii nauk SSSR