Perelman Ya.I. Veselye zadachi. 101 golovolomka dlya yunykh matematikov s 112 risunkami/Perelman Y.I. Funny problems. 101 puzzles for young mathematicians with 112 drawings In Russian - landofmagazines.com

TransliterationPerelman Ya.I. Veselye zadachi. 101 golovolomka dlya yunykh matematikov s 112 risunkami

In EnglishPerelman Y.I. Funny problems. 101 puzzles for young mathematicians with 112 drawings In Russian

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