A tractor clears several inches of snow from a road in Flagstaff
A tractor clears several inches of snow from a road in Flagstaff, Arizona March 19, 2012. The late winter storm kept temperatures well below normal in California on Sunday and generated heavy snow fall in several states, including Arizona, where several highways in the northern part of the state were temporarily closed, according to the Arizona Department of Transportation. REUTERS/Joshua Lott (UNITED STATES - Tags: ENVIRONMENT)
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