| The Columbia Gazetteer of North America. 2000. |
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| Grenadier Island |
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| Grenadier Island (5 mi/8 km long, 1 mi/2 km wide), SE Ont., Canada, one of the Thousand Isls., in the St. Lawrence, 15 mi/24 km SW of Brockville. |
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| | | The Columbia Gazetteer of North America. Copyright © 2000 Columbia University Press. |
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