Keith P. Tognetti

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PREAMBLE Leonardo of Pisa (of leaning tower fame), better known to us as Fibonacci, was born about 1175 and died about 1250. His fame rests mainly on his book Liber Abacci (A Book about the abacus or, the book of calculations-in fact its objective was to make the abacus obsolete) which he wrote in 1202. A second revised version was produced in 1228 and this(More)
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