Designed for readers who want to keep their minds sharp and stave off the mental effects of aging, this book presents a 60-day program that consists of daily worksheets of simple mathematical calculations that take less than five minutes to complete.
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ISBN | 9781933241159 |
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Sprache | eng |
Cover | Kartonierter Einband (Kt) |
Verlag | Kumon Publishing North America |
Jahr | 20050801 |
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