511 resultados para United States. Works Progress Administration (Ill.).


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Transportation Systems Center, Cambridge, Mass.National Highway Traffic Safety Administration, Office of Research and Development, Washington, D.C.

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

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"Published by the Minnesota State Department of Education and the Division of Standards and Research of the United States Employment Service as a report on official projects 5196 ... 5201, [4155 and 4184] conducted under the auspices of the Works Progress Administration."