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October 1953
Research Article|
October 01 1953
A Simple Indication of the Efficacy of a Teaching Device
The American Biology Teacher (1953) 15 (6): 166–167.
Citation
Charles E. Packard; A Simple Indication of the Efficacy of a Teaching Device. The American Biology Teacher 1 October 1953; 15 (6): 166–167. doi: https://doi.org/10.2307/4438525
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