874 resultados para Problematic internet use


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National Bureau of Standards, Office of Vehicle Systems Research, Washington, D.C.

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Mode of access: Internet.

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National Highway Traffic Safety Administration, Washington, D.C.

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National Highway Traffic Safety Administration, Office of Driver and Pedestrian Research, Washington, D.C.

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Prepared for Assistant Secretary of the Army (R & D), Dept. of the Army.

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Prepared by County Committee in cooperation with County Extension Service, University of Minnesota and Bureau of Agricultural Economics U.S. Dept. of Agriculture.

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Prepared by County Committee in cooperation with County Extension Service, University of Minnesota and Bureau of Agriculture Economics U.S. Dept. of Agriculture.

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Mode of access: Internet.

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Mode of access: Internet.

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Contains arrangements of songs, selections from operas, dances, etc.

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"Cooperative agreement no. CR818353."