Aritmética social 3.
Aritmética social 3.
- [Hato Rey, P.R.] Programa de Matemáticas, División de Supervisión y Currículo 1960.
- 109 [2] p. illus.
At head of title : Manual para el maestro.
Bibliography : p. 111.
Mathematics--Study and teaching, (Elementary)
At head of title : Manual para el maestro.
Bibliography : p. 111.
Mathematics--Study and teaching, (Elementary)