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Ralph Waldo Leighton
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Cilt sonuçları
Studies to determine the relative achivement of students at different potentiality levels
Ralph Waldo Leighton · University of Oregon
39 sayfa · 1933
Ability / Educational tests and measurements
An analysis of physical education legislation applying to public schools of the forty-eight States
Ralph Waldo Leighton · School of Health and Physical Education, University of Oregon
16 sayfa · 1950
States / Physical education and training