Buckingham, B. R. (Burdette Ross), b. 1876. Buckingham, B. R. (Burdette Ross), b. 1876.
Elementary arithmetic : its meaning and practice.
- Boston : Ginn, [1953]
53004319 /L
Number concept.
Arithmetic -- Foundations.--Arithmetic -- Foundations.
QA9 / .B845 1953
511