Books about Plants -- Variation (sorted by release date)
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Displaying results 1–3
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Species and Varieties, Their Origin by Mutation
Hugo de Vries
Jan 1, 2005
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The Effects of Cross & Self-Fertilisation in the Vegetable Kingdom
Charles Darwin
Aug 1, 2003
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The Different Forms of Flowers on Plants of the Same Species
Charles Darwin
Mar 1, 2003
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Displaying results 1–3
