Norman E. Wallen
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Educational Research: A Guide to the Process
Norman E. Wallen
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How to Design and Evaluate Research in Education
Fraenkel, Jack; Wallen, Norman; Hyun, Helen
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How to Design and Evaluate Research in Education
Fraenkel, Jack; Wallen, Norman
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How to Design and Evaluate Research in Education
Fraenkel, Jack; Wallen, Norman; Hyun, Helen
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How to Design and Evaluate Research in Education
Fraenkel, Jack; Wallen, Norman; Hyun, Helen
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ISE How to Design and Evaluate Research in Education
Fraenkel, Jack R.; Wallen Professor Emeritus - San Francisco State University, Norman E.; Hyun, Helen
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