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John O Willis

John O Willis is the author of "Essentials of IDEA for Assessment Professionals", "Essentials of DAS-II Assessment", "Essentials of Idea for Assessment Professionals" and "Pseudoscience".

Books by John O Willis
Essentials of DAS...
Dumont, Ron
Electronic book text:
Kaufman Allison B.
Digital (delivered electronically): $52.95
Essentials of DAS...
Dumont, Ron
Paperback: $57.25
Essentials of IDE...
McBride, Guy
Electronic book text: