874 resultados para Problematic internet use
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Includes bibliographical references (p. 36-38).
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Publication date stamped on t.p.
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Federal Highway Administration R&D report no. M 0383.
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Issued in loose-leaf form.
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"B-125010."
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Mode of access: Internet.
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Errata slip inserted in pt. 1.
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Includes tables.
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"February 1937."
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Mode of access: Internet.
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Mode of access: Internet.
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Bibliography in each volume.
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.
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National Highway Traffic Safety Administration, Washington, D.C.