Teaching arithmetic in elementary school

Sonraí bibleagrafaíochta
Príomhchruthaitheoir:	Morton, Robert Lee, 1889-
Formáid:	LEABHAR
Teanga:	English
Foilsithe / Cruthaithe:	New York, boston [etc.] Silver Burdett company c1937-39.
Ábhair:	Arithmetic > Study and teaching.