Current researh in elementary school mathematics

Manylion Llyfryddiaeth
Prif Awdur:	Ashlock, Robert B. 1930-
Awduron Eraill:	Herman, Wayne L. joint comp
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	[New York] Macmillan c1970.
Pynciau:	Mathematics > Study and teaching (Elementary). Mathematical research.