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Charles H. Butterfield
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Journal Articles
The American Biology Teacher (1982) 44 (2): 137.
Published: 01 February 1982
Journal Articles
The American Biology Teacher (1980) 42 (6): 368.
Published: 01 September 1980
Journal Articles
The American Biology Teacher (1979) 41 (6): 332–354.
Published: 01 September 1979
Journal Articles
The American Biology Teacher (1978) 40 (8): 511.
Published: 01 November 1978
Journal Articles
The American Biology Teacher (1977) 39 (9): 565–566.
Published: 01 December 1977
Journal Articles
The American Biology Teacher (1976) 38 (1): 58–59.
Published: 01 January 1976
Journal Articles
The American Biology Teacher (1975) 37 (1): 57–58.
Published: 01 January 1975
Journal Articles
The American Biology Teacher (1961) 23 (3): 141–142.
Published: 01 March 1961