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Donald Humphreys
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Journal Articles
Journal Articles
The American Biology Teacher (1980) 42 (7): 431.
Published: 01 October 1980
Journal Articles
The American Biology Teacher (1978) 40 (8): 506–507.
Published: 01 November 1978
Journal Articles
The American Biology Teacher (1976) 38 (1): 56.
Published: 01 January 1976
Journal Articles
The American Biology Teacher (1973) 35 (8): 484.
Published: 01 November 1973
Journal Articles
The American Biology Teacher (1973) 35 (4): 233–234.
Published: 01 April 1973