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Название: Mathematical Gems I
Автор: Honsberger R.
This book presents thirteen topics from elementary mathematics. Each chapter has a simple theme and contains at least one mathematical gem. They are presented in the hope that you will come to know the thrill of some of the best discoveries at the elementary level.
Read more at http://ebookee.org/Mathematical-Gems-I_173711.html#rl3f2W6qEwGrxozg.99