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| 100 | _aCONKLIN, Faith | ||
| 222 | _aGRADE TEACHER | ||
| 245 | _aStart the tape this math is fun! | ||
| 300 | _a80-81 | ||
| 362 | _a1968 Vol. 85, no. 7 (mar.) | ||
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| 653 | 0 | _aENSEÑANZA | |
| 653 | 0 | _aMATEMATICAS | |
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