Items where Author is "Wallen, Norman E."
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Fraenkel, Jack R. and Wallen, Norman E. and Hyun, Helen H. (2023) How to design and evaluate research in education. McGraw Hill, New York. ISBN 978-1-265-18481-0
Fraenkel, Jack R. and Wallen, Norman E. and Hyun, Helen H. (2012) How to design and evaluate research in education. McGraw-Hill Humanities/Social Sciences/Languages, New York. ISBN 978-0-07-809785-0