32 simple tricks for quick mental calculations by Yakov Perelman (English) Paper
9,62 €
By Yakov Perelman. Yakov Perelman (1882-1942) was a Russian and Soviet science writer and author of many popular science books. He has been known by his popular, witty and quite scientific works on physics, astronomy and mathematics, which are, moreover written in a marvelous language and are very readable.
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