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John Breukelman
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Journal Articles
The American Biology Teacher (1973) 35 (2): 100.
Published: 01 February 1973
Journal Articles
The American Biology Teacher (1971) 33 (3): 172.
Published: 01 March 1971
Journal Articles
The American Biology Teacher (1968) 30 (1): 36–38.
Published: 01 January 1968
Journal Articles
The American Biology Teacher (1966) 28 (7): 552–559.
Published: 01 September 1966
Journal Articles
The American Biology Teacher (1961) 23 (6): 359–364.
Published: 01 October 1961
Journal Articles
The American Biology Teacher (1961) 23 (5): 299.
Published: 01 May 1961
Journal Articles
The American Biology Teacher (1956) 18 (1): 4–5.
Published: 01 January 1956
Journal Articles
The American Biology Teacher (1955) 17 (1): 42–45.
Published: 01 January 1955
Journal Articles
The American Biology Teacher (1953) 15 (5): 132–133.
Published: 01 May 1953
Journal Articles
The American Biology Teacher (1952) 14 (8): 228.
Published: 01 December 1952
Journal Articles
The American Biology Teacher (1952) 14 (4): 101.
Published: 01 April 1952
Journal Articles
The American Biology Teacher (1951) 13 (1): 17.
Published: 01 January 1951
Journal Articles
The American Biology Teacher (1950) 12 (6): 132–133.
Published: 01 October 1950
Journal Articles
The American Biology Teacher (1950) 12 (2): 45.
Published: 01 February 1950
Journal Articles
The American Biology Teacher (1950) 12 (1): 18.
Published: 01 January 1950
Journal Articles
The American Biology Teacher (1949) 11 (7): 174–180.
Published: 01 November 1949
Journal Articles
The American Biology Teacher (1949) 11 (6): 158.
Published: 01 October 1949
Journal Articles
The American Biology Teacher (1949) 11 (4): 96–98.
Published: 01 April 1949
Journal Articles
The American Biology Teacher (1949) 11 (2): 51.
Published: 01 February 1949
Journal Articles
The American Biology Teacher (1949) 11 (1): 21–23.
Published: 01 January 1949