Teaching modern mathematics in the elementary school

Dades bibliogràfiques
Autor principal:	Fehr, Howard Franklin, 1901-
Altres autors:	Phillips, Jo McKeeby, joint auth
Format:	Llibre
Idioma:	English
Publicat:	[Reading, Mass.] Addison-Wesley [c1967]
Matèries:	Mathematics > Study and teaching (Elementary)