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Travers, Jeffrey R.
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National Research Council (U.S.). Panel on Selection and Placement of Students in Programs for the Mentally Retarded.
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Jones, Lyle V.
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ProQuest (Firm)
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Hayes, Cheryl D.
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Jones, Lyle V.
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Entwisle, Barbara.
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Jones, Lyle V.
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Jones, Lyle V.
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