![](/img/cover-not-exists.png)
Grade Level Contributions to the Variance of Flanders' Interaction Categories
Flora N. Roebuck and David N. AspyVolume:
42
Language:
english
Journal:
The Journal of Experimental Education
DOI:
10.2307/20150956
Date:
January, 1974
File:
PDF, 1.02 MB
english, 1974