The Trachtenberg speed system of basic mathematics.

The Trachtenberg speed system of basic mathematics.

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Bibliografske podrobnosti
Glavni avtor: Cutler, Ann
Drugi avtorji: McShane, Rudolph Matas (joint author.)
Format: Knjiga
Jezik:English
Undetermined
Izdano: Garden City, N.Y. Doubleday [c1960]
Izdaja:[1st ed.].
Teme:
Trachtenberg, Jakow > 1888-.
Arithmetic.