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| Utgitt
| Washington : U.S. Departement of Health, Educationm, and Welfare , 1966
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| Omfang
| vi, 737 s., 1 fold. pl. : ill.
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| Opplysninger
| "A publication of the National Center for Educational Statistics" - Tittelbladets bakside. - "Submitted in response to section 402 of the Civil Rights Act of 1965" - S. iii
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