BYELAYA TSERKOV (White Church), a town in the Ukrainian Socialist Soviet Republic, on the left bank of the Rosi river, on a branch railway and on the main road from Kiev to the Crimea. Lat. 49° 50' N., Long. 3o° 8' E. Pop. (1926) 21,939. It has an elevator and a radio station, trades in cattle and grain, and has numerous fairs. It is first mentioned in 1155, but was destroyed by the Mongols in the 13th century. In 155o the Prince of Kiev built a castle here and gave the inhabitants various privileges. From 1651 it was subject alternately to Poland and to independent hetmans (Cossack chiefs), but became Russian after 1793.