• Darwin Archive | 'Cross and self fertilisation': portfolios, 1840s-1876 | 'Cross and self fertilisation': experimental results, [1840s]-1875 | Torn Apart Notebook T 103, 104 (excised page), 1841-06-01 - 1841-06-30 | T 104, 1841-06-01 - 1841-06-30

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