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| Published in: | The Arithmetic teacher 1982-09, Vol.30 (1), p.55-55 |
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| Main Author: | |
| Format: | Article |
| Language: | English |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | |
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| ISSN: | 0004-136X |
| DOI: | 10.5951/AT.30.1.0055 |