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Arithmetic; a cooperative study in educational measurements
- "Arithmetic; a cooperative study in educational measurements"
- "Arithmetic : a cooperative study in educational measurements"
- "Arithmetic; a cooperative study in educational measurements"@en
- "Arithmetic a cooperative study in educational measurements"@en
- "Arithmetic : a cooperative Study in educational Measurements"
- "Arithmetic : A coöperative study in educational measurements, by M. E. Haggerty"