Arithmetic : developing concepts and skills /
J. William Beck ... [et al.].
- New York : Harper's College Press, c1976.
- 711 p. : ill. ; 28 cm.
Includes index.
0061644021
75005767
Arithmetic.
Arithmetic--Remedial teaching.
QA107 / .A73
513 / BEA
Includes index.
0061644021
75005767
Arithmetic.
Arithmetic--Remedial teaching.
QA107 / .A73
513 / BEA