The number combinations, their relative difficulty and the frequency of their appearance in text-books,
שמור ב:
| OCLC: | 4285002 |
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| מחבר ראשי: | |
| מחברים אחרים: | |
| שפה: | English |
| יצא לאור: |
Madison, Wis.
[1924]
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| סדרה: | University of Wisconsin. Bureau of Educational Research. Bulletin no. 2. July 1924.
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| נושאים: | |
| פורמט: | Monograph Note that CRL will digitize material from the collection when copyright allows. |