Books by Leonard Porter Ayres
Child Accounting In The Public Schools (1915)
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Health Work in the Public Schools
Leonard Porter Ayres, May Ayres
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The Measurement of Educational Products
Guy Montrose Whipple, Leonard Porter Ayres
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A Scale for Measuring the Quality of Handwriting of Adults
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An Index Number for State School Systems
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The Cleveland School Survey; Summary Volume
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The Public Library And The Public Schools
Leonard Porter Ayres, Adele McKinnie
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Child Accounting in the Public Schools
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The Public Schools of Springfield, Illinois: Educational Section of the Springfield Survey Conducted Under the Direction of Leonard P. Ayres, Ph. D
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The Prospects for Building Construction in American Cities
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The Money Cost of Repetition Versus the Money Saving Through Acceleration
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The Great Events of the Great War; a Comprehensive and Readable Source Record of the World's Great War, Emphasizing the More Important Events, and Pre
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The Cleveland Survey of the Administration of Criminal Justice
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School Organization and Administration
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The Relation Between Entering Age and Subsequent Progress Among School Children ..
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School Buildings and Equipment, Issue 9
Leonard Porter Ayres, May Ayres Burgess
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The Cleveland School Survey: Summary Volume, Issue 16
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School Buildings and Equipment, Issue 9
Leonard Porter Ayres, May Ayres Burgess
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Health Work in the Public Schools
Leonard Porter Ayres, May Ayres
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The Automobile Industry And Its Future
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The Automobile Industry And Its Future
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