| |
| | Oka, river, Siberian Russia - Facts from the Encyclopedia - Yahoo! Education (Site not responding. Last check: 2007-11-01) |
 | | Oka, river, Siberian Russia - Facts from the Encyclopedia - Yahoo! |
 | | river, c.600 mi (970 km) long, rising in the Sayan Mts., Buryat Republic, S central Siberian Russia. |
 | | The lower Oka valley is flooded by waters impounded behind Bratsk Dam. |
| messenger.yahooligans.com /reference/encyclopedia/entry/OkaERus (92 words) |
|