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Название: Mathematical Plums
Автор: Hosberger R.
In keeping with the preceding volumes in the series, the present volume stems from the desire to share the wonder and excitement of ingenious mathematical work at the elementary level. The many exercises included invite the reader to enjoy the special satisfaction that comes from active participation in this great adventure.
Read more at http://ebookee.org/Mathematical-Plums_173715.html#8WsigzyAqcQJVdOK.99