The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
an urban-type settlement in Verkhnebureinskii Raion, Khabarovsk Krai, RSFSR. Sofiisk is located on the Olga River of the Amur River basin, 170 km northeast of the Urgal railroad station. Gold is mined in the area.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.