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Mathematics, Study and teaching (Elementary)Showing 1 featured edition. View all 1 editions?
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Edition Notes
Bibliography: p. [89]-90.
Cooperative research project no. 2531. Research was supported by the Cooperative Research Program of the U. S. Office of Education.
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Feedback?October 4, 2020 | Edited by MARC Bot | import existing book |
December 10, 2009 | Created by WorkBot | add works page |