Author: Ryuta Kawashima
Publisher: Kumon Publishing North America, Inc
Published: 1 Aug 2005
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.
42.12 USD 49.95 USD
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15.35 USD 19.00 USD
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