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The top documents tagged [national phone survey]
Dr. David A. Shirk Trans-Border Institute University of San Diego Findings & Policy Implications Title Slide
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National Efforts to Reduce Distracted Driving Maria E. Vegega U.S. Department of Transportation National Highway Traffic Safety Administration (NHTSA )
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Sample Definitions Sample Types Rules for Simple Random Sample and Sample Size Selection
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National Efforts to Reduce Distracted Driving
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