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- National Center for Education Statistics113
- ebrary, Inc45
- British Broadcasting Corporation, production company24
- BBC Worldwide Ltd., film distributor23
- Winston, Robert M. L.22
- ProQuest (Firm)20
- Open University, production company17
- Project Muse15
- United States. Office of Educational Research and Improvement14
- Institute of Education Sciences (U.S.)13
- Oxford University Press13
- Carroll, C. Dennis12
- Horn, Laura11
- Adelman, Clifford10
- Gilligan, Carol, 1936-10
- National Opinion Research Center10
- Kagan, Jerome9
- United States. Bureau of Labor Statistics9
- Vaillant, George E., 1934-9
- United States. Office of Juvenile Justice and Delinquency Prevention, issuing body8