841 resultados para research methods and approaches
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October 1979.
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Issued Feb. 1978.
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Cover title.
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Mode of access: Internet.
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Item 504
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Mode of access: Internet.
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National Highway Traffic Safety Administration, Washington, D.C.
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Mode of access: Internet.
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National Highway Safety Bureau, Washington, D.C.
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National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.
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Mode of access: Internet.