Canadian dollar weakens as investors unravel central bank rate signals

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Canadian dollar falls 0.2% against the greenback
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Trades in a range of 1.3766 to 1.3809
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Price of oil decreases 0.9%
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Canada-U.S. 10-year spread widens to 91.9 basis points
By Fergal Smith
TORONTO, Sept 18 (Reuters) - The Canadian doll
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