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Ralph W. Lewis
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Journal Articles
The American Biology Teacher. 1999; 617488–489 doi: https://doi.org/10.2307/4450748
Published: 01 September 1999
Journal Articles
The American Biology Teacher. 1998; 609649 doi: https://doi.org/10.2307/4450575
Published: 01 November 1998
Journal Articles
The American Biology Teacher. 1998; 608564–566 doi: https://doi.org/10.2307/4450552
Published: 01 October 1998
Journal Articles
The American Biology Teacher. 1998; 607484 doi: https://doi.org/10.2307/4450532
Published: 01 September 1998
Journal Articles
Journal Articles
Journal Articles
The American Biology Teacher. 1997; 5916 doi: https://doi.org/10.2307/4450229
Published: 01 January 1997
Journal Articles
The American Biology Teacher. 1994; 566327 doi: https://doi.org/10.2307/4449840
Published: 01 September 1994
Journal Articles
Journal Articles
The American Biology Teacher. 1994; 56270 doi: https://doi.org/10.2307/4449752
Published: 01 February 1994
Journal Articles
Journal Articles
The American Biology Teacher. 1991; 536328 doi: https://doi.org/10.2307/4449317
Published: 01 September 1991
Journal Articles
Journal Articles
The American Biology Teacher. 1988; 506362–366 doi: https://doi.org/10.2307/4448762
Published: 01 September 1988
Journal Articles
The American Biology Teacher. 1987; 497398–445 doi: https://doi.org/10.2307/4448573
Published: 01 October 1987
Journal Articles
The American Biology Teacher. 1986; 486344–347 doi: https://doi.org/10.2307/4448322
Published: 01 September 1986
Journal Articles
The American Biology Teacher. 1986; 484196–197 doi: https://doi.org/10.2307/4448263
Published: 01 April 1986
Journal Articles
The American Biology Teacher. 1981; 437379–396 doi: https://doi.org/10.2307/4447308
Published: 01 October 1981
Journal Articles
The American Biology Teacher. 1980; 42111–43 doi: https://doi.org/10.2307/4446794
Published: 01 January 1980
Journal Articles
The American Biology Teacher. 1972; 344209–225 doi: https://doi.org/10.2307/4443888
Published: 01 April 1972