Books by Clarence Truman Gray
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Variations in the Grades of High School Pupils
€42.82
€53.53
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Types of Reading Ability as Exhibited Through Tests and Laboratory Experiments
€48.21
€60.26
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Deficiencies in Reading Ability: Their Diagnosis and Remedies
€56.76
€70.95
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A Score Card for the Measurement of Handwriting
€41.42
€51.78
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Statistics Applied to Education and Psychology
Clarence Truman Gray, David Freeman Votaw
€46.96
€58.70
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