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Research Article|
May 01 1953
Card Holder for the Opaque Projector
The American Biology Teacher (1953) 15 (5): 128–129.
Citation
O. W. Neher; Card Holder for the Opaque Projector. The American Biology Teacher 1 May 1953; 15 (5): 128–129. doi: https://doi.org/10.2307/4438502
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