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Ontario, Lake, 7,540 sq mi (19,529 sq km), 193 mi (311 km) long and 53 mi (85 km) at its greatest width, between SE Ont., Canada, and NW N.Y.; smallest and lowest of the Great Lakes. It has a ...
Ontario, province (2001 pop. 11,410,046), 412,582 sq mi (1,068,587 sq km), E central Canada. Ontario, the second largest Canadian province, is the most populous and the leader in mineral, indu...
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