On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection
On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection, conjunto de dois artigos científicos sobre a teoria da evolução de Charles Darwin e Alfred Russel Wallace, é apresentado pela primeira vez, diante de um grupo de naturalistas, na Sociedade Linneana de Londres.
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