The teaching of arithmetic
Spitzer Herbert F.
The teaching of arithmetic Herbert F. Spitzer - Boston Hougton Mifflin Company c1948. - viii, 397 p. ill.
Includes indexes.
Includes bibliographical references.
Arithmetic--Study and teaching.
The teaching of arithmetic Herbert F. Spitzer - Boston Hougton Mifflin Company c1948. - viii, 397 p. ill.
Includes indexes.
Includes bibliographical references.
Arithmetic--Study and teaching.