{"slug":"paper-darwin-c-1859-on-the-origin-of-species-by-means-of-natural-selection-or-the-pres","head_index":0,"current":{"title":"Darwin, C. (1859). On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life","updated_at":"2026-07-08T08:04:35.248Z"},"revisions":[]}