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Corrective Arithmetic. For supervisors, teachers, and teacher-training classes ... Under the editorship of B.R. Buckingham
- "Corrective Arithmetic. For supervisors, teachers, and teacher-training classes ... Under the editorship of B.R. Buckingham"@en
- "Corrective arithmetic : for supervisors, teachers, and teacher-training classes"
- "Corrective arithmetic for supervisors, teachers, and teacher-training classes"@en