Arithmetic :
Mueller, Francis J.
Arithmetic : its structure and concepts / Francis J. Mueller. - 2d ed. - Englewood Cliffs, N.J. : Prentice-Hall, 1964. - 379 p.
Arithmetic--Study and teaching.
Arithmetic : its structure and concepts / Francis J. Mueller. - 2d ed. - Englewood Cliffs, N.J. : Prentice-Hall, 1964. - 379 p.
Arithmetic--Study and teaching.