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| − | 1. Mayr, Ernst One Long Argument (1991:75) | + | 1. Mayr, ''Ernst One Long Argument'' (1991:75) |
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| | 2. Ibid. (1991:75). | | 2. Ibid. (1991:75). |
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| − | 3. Barlow, Nora (editor) The Autobiography of Charles Darwin (1958:85). | + | 3. Barlow, Nora (editor) ''The Autobiography of Charles Darwin'' (1958:85). |
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| | 4. Ibid. (1958:85-87). | | 4. Ibid. (1958:85-87). |
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| − | 5. Browne, Janet Charles Darwin The Power of Place (2002:341) | + | 5. Browne, Janet ''Charles Darwin The Power of Place'' (2002:341) |