Mathematics reform in the primary school : a report of a meeting of experts held in Hamburg during January, 1966 /
prepared and ed. by J. D. Williams ; published with the permission of Unesco.
- Hamburg [Al. Fed.] : Institute for Education, 1967.
- 130 p.
- International studies in education .
Matemáticas--Estudio y enseñanza (Elemental) Matemáticas