Usnarka ( - Usnarka) is a river of Poland and Belarus, a tributary of the Svislach.There is a reference on the Polish Wikipedia to be verified and inserted as a source: The Blue Book of Belarus: Encyclopedia / Editors: N. A. Dzisko et al. – Minsk: Belarusian Encyclopedia, 1994. Page 377. ISBN 5-85700-133-1.. Its source is near the village Harkawicze in eastern Poland. It crosses the border with Belarus, and flows into the Svislach near the village Makarawtsy, Byerastavitsa District.
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