1 文書を見つけるための辞書。

• russia, soviet union, ussr, union of soviet socialist republics
• ソビエト社会主義共和国連邦, ソビエト, ＵＳＳＲ
• a former communist country in eastern Europe and northern Asia; established in 1922; included Russia and 14 other soviet socialist republics (Ukraine and Byelorussia and others); officially dissolved 31 December 1991
• 東部ヨーロッパと北アジアの旧共産主義国