The Trachtenberg Speed System of Basic Mathematics.
Curler, Ann dan Rudolph McShane.
The Trachtenberg Speed System of Basic Mathematics. - New York: Duobleday & Company, Inc., 1960. - 270p. ilus, 20 cm.
Matematika
QA115 / .C99 1960
510
The Trachtenberg Speed System of Basic Mathematics. - New York: Duobleday & Company, Inc., 1960. - 270p. ilus, 20 cm.
Matematika
QA115 / .C99 1960
510