| Born | 1890 |
| Died | 1967 |
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| Born | 1890 |
| Died | 1967 |
Subjects
Arithmetic, Study and teaching (Elementary), Study and teaching, Mathematics, Geometry, Learning disabilities, Text-booksID Numbers
- OLID: OL2234745A
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| June 6, 2012 | Edited by VacuumBot | Removed period from death date |
| August 19, 2008 | Edited by an anonymous user | fix author name |
| April 1, 2008 | Created by an anonymous user | initial import |