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Richard A. Levin
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Journal Articles
The American Biology Teacher. 1980; 423191 doi: https://doi.org/10.2307/4446886
Published: 01 March 1980
Journal Articles
The American Biology Teacher. 1978; 408515–516 doi: https://doi.org/10.2307/4446395
Published: 01 November 1978
Journal Articles
The American Biology Teacher. 1975; 376380 doi: https://doi.org/10.2307/4445302
Published: 01 September 1975
Journal Articles
The American Biology Teacher. 1974; 365315 doi: https://doi.org/10.2307/4444814
Published: 01 May 1974
Journal Articles
The American Biology Teacher. 1973; 357423 doi: https://doi.org/10.2307/4444481
Published: 01 October 1973
Journal Articles
The American Biology Teacher. 1973; 35139 doi: https://doi.org/10.2307/4444195
Published: 01 January 1973
Journal Articles
The American Biology Teacher. 1972; 346357 doi: https://doi.org/10.2307/4444001
Published: 01 September 1972
Journal Articles
The American Biology Teacher. 1972; 344234 doi: https://doi.org/10.2307/4443910
Published: 01 April 1972