The Trachtenberg speed system of basic mathematics / translated and adapted by Ann Cutler and Rudolph McShane.
By: Cutler, Ann.
Contributor(s): McShane, Rudolph Matas.
Material type:
BookPublisher: London : Souvenir, c1960Description: 270 p. : ill.Subject(s): Trachtenberg, Jakow, 1888- | Arithmetic
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