An inquiry into the teaching of addition and subtraction ...

Description

Thesis (Ph. D.)--University of Pennsylvania.

Links & Downloads

1. http://catalog.hathitrust.org/api/volumes/oclc/28639546.html

Tags

Arithmetic

Additional Fields

Identifer	oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/578485647
Date	January 1901
Creators	Yocum, A. Duncan
Publisher	Philadelphia, Avil Print. Co.,
Source Sets	OCLC
Language	English
Detected Language	English