That area N of the Arctic Circle in European Russian Federation and Siberia, and including Russian islands in the Arctic Ocean. In Siberia, arctic climatic conditions prevail far S of the Arctic Circle because of its great continental expanse. Before 1978
Region occupying easternmost Siberia including Amur Oblast, Khabarovsk Kray, Primorye Kray, and Sakhalin Oblast. Before 1978, also search USSR AND Far East. This term has multiple hierarchies. Added to Thesaurus in 1993.
Formerly the Russian Soviet Federated Socialist Republic (RSFSR) or Russian Republic in Europe and Asia. Before 1993, Russian Republic was also used. Indexed with Asia and/or Europe as applicable. Added to Thesaurus in 1993.
Comprises most of the former European USSR W of the Urals and is bordered on the S by the Carpathians, the Crimean Mountains and the Caucasus. Indexed with former Soviet republics as applicable.
Ancient platform of Precambrian crystalline rocks overlain by sedimentary deposits of the Russian or East European Plain. Before 1993, USSR was a broader term. Indexed with Europe or Asia and former Soviet republics as applicable.