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3. Cajori, F., 1928–29. A History of Mathematical Notations. Two volumes. The Open Court Publishing Company, Chicago. Reprinted (1993): Dover, New York.
4. Chace, A.B., 1927. The Rhind Mathematical Papyrus. Mathematical Association of America, Oberlin. Reprinted (1979) National Council of Teachers of Mathematics, Reston. All page references are to the original publication.
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