The Burden of Proof: Validity as Improvement of...

The Burden of Proof: Validity as Improvement of Instructional Practice

Gersten, Russell, Keating, Thomas, Irvin, Larry K.
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Volume:
61
Language:
english
Journal:
Exceptional Children
DOI:
10.1177/001440299506100602
Date:
May, 1995
File:
PDF, 1.28 MB
english, 1995
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