Notes on mathematics in primary schools / 
by member of the Association of Teachers of Mathematics. 
 - Cambridge [Eng.] :  Cambridge University,  1967. 
 - 340 p. :  il. (algunas col.) 
 - Science : mathematics .
<br/><br/><label>Encabezamiento--Tema: </label><br/>Matemáticas--Estudio y enseñanza (Elemental)