1. The trachtenberg speed system of basic mathematics.
پدیدآورنده : / Translated and adapted by Ann Cutler and Radolph Mcshane,Cutler
کتابخانه: Central Library and Documents Center of Tehran University (Tehran)
موضوع : Arithmetic -- Oprations,Tranchtenberg, Jakow, 1888- 1951
رده :
QA
101
.
C8
