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© 2008 WCET
This web site is provided as a service of WCET — the Cooperative advancing the effective use of technology in higher education.
The NSD research was originated and is still edited by: Thomas L. Russell, emeritus, North Carolina State University. 
The No Significant Difference Phenomenon ©1999.
This comparative research annotated bibliography explores 355 research reports, summaries and papers on technology for distance education. 