0dn0k0rpusny plow, Ukraine

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In the old issue of the magazine "Nauka i zhizn" (No. 10 of 1982, if anyone wants to check:)) - the answer to the reader's question about the origin of the name of some rivers: "Ublya - the name is connected with the color of the water in the river.":)
P.S. Ubl - in one of the Slavic languages ​​- white.