Oka River  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Oka River
RTAsia
 Europe
 Irkutsk Russian Federation
SNRiver W of Lake Baikal in central Irkutsk Oblast which flows into the Angara River. Also a river in central European Russian Federation which flows into the Volga at Nizhniy Novgorod (formerly Gorki). Before 1978, also search Oka AND USSR. Indexed with Eu