Tobolsk

city, Tyumen oblast (region), west-central Russia. It lies at the confluence of the Irtysh and Tobol rivers. Founded in 1587, it was one of the chief ...
Found on http://www.britannica.com/eb/a-z/t/56

Tobolsk

Tobolsk (tubôlsk') , city (1989 pop. 94,000), W Siberian Russia, a port on the Irtysh River near its confluence with the Tobol. Industries revolve around oil and gas from the W Siberian oil field. Founded in 1587 by Cossacks on the site of a Tatar village, Tobolsk was one of Russian Siberi...
Found on http://www.infoplease.com/ce6/world/A0848933.html
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