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Jay C. Shaffer
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Journal Articles
The American Biology Teacher. 1993; 554255 doi: https://doi.org/10.2307/4449648
Published: 01 April 1993
Journal Articles
The American Biology Teacher. 1991; 535314 doi: https://doi.org/10.2307/4449305
Published: 01 May 1991
Journal Articles
The American Biology Teacher. 1989; 518511–512 doi: https://doi.org/10.2307/4449007
Published: 01 November 1989