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Richard Duhrkopf
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Journal Articles
The American Biology Teacher. 1997; 59158 doi: https://doi.org/10.2307/4450243
Published: 01 January 1997
Journal Articles
The American Biology Teacher. 1994; 565309–310 doi: https://doi.org/10.2307/4449828
Published: 01 May 1994
Journal Articles
The American Biology Teacher. 1993; 558502 doi: https://doi.org/10.2307/4449724
Published: 01 November 1993
Journal Articles
The American Biology Teacher. 1993; 556376–377 doi: https://doi.org/10.2307/4449685
Published: 01 September 1993
Journal Articles
The American Biology Teacher. 1993; 554251–252 doi: https://doi.org/10.2307/4449645
Published: 01 April 1993
Journal Articles
The American Biology Teacher. 1993; 552123–124 doi: https://doi.org/10.2307/4449600
Published: 01 February 1993
Journal Articles
The American Biology Teacher. 1993; 55157–58 doi: https://doi.org/10.2307/4449581
Published: 01 January 1993
Journal Articles
The American Biology Teacher. 1992; 547443–444 doi: https://doi.org/10.2307/4449537
Published: 01 October 1992
Journal Articles
The American Biology Teacher. 1992; 546379–380 doi: https://doi.org/10.2307/4449518
Published: 01 September 1992
Journal Articles
The American Biology Teacher. 1992; 542123–124 doi: https://doi.org/10.2307/4449422
Published: 01 February 1992
Journal Articles
Journal Articles
The American Biology Teacher. 1991; 537442–443 doi: https://doi.org/10.2307/4449354
Published: 01 October 1991
Journal Articles
Journal Articles
Journal Articles
The American Biology Teacher. 1990; 527436–438 doi: https://doi.org/10.2307/4449160
Published: 01 October 1990
Journal Articles
The American Biology Teacher. 1990; 526384 doi: https://doi.org/10.2307/4449139
Published: 01 September 1990
Journal Articles
Journal Articles
Journal Articles
The American Biology Teacher. 1990; 523185–186 doi: https://doi.org/10.2307/4449075
Published: 01 March 1990
Journal Articles
The American Biology Teacher. 1990; 522121–122 doi: https://doi.org/10.2307/4449054
Published: 01 February 1990