At head of title: National Assessment of Educational Progress.
Authors: Anthony D. Lutkus, Bobby D. Rampey, and Patricia L. Donahue.
"February 2006."
"NCES 2006-455r."
Includes bibliographical references.
Also issued in paper format.
Electronic reproduction. Washington, D.C. : National Center for Education Statistics, 2006.
System requirements: Adobe Acrobat Reader.
Mode of access: Internet from the NCES web site. Address as of 8/22/06: http://nces.ed.gov/nationsreportcard/pdf/dst2005/2006455r.pdf ; current access via PURL.