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douglas m wiegand
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Special safety concerns of the school bus industry
Douglas M. Wiegand · Transportation Research Board
43 sayfa · 2010
Students / Transportation / Safety measures / School buses / School bus passengers
Evaluation of Knowledge, Attitudes, and Practices Regarding Influenza Vaccination among Employees in a School District
Marie A. De Perio, Douglas M. Wiegand, Scott E. Brueck, Department of Health and Human Services Staff, National Institute for Occupational Safety and Health. · CreateSpace Independent Publishing Platform
36 sayfa · 2013
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