The Formation of Vegetable Mould Through the Action of Worms (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "The Formation of Vegetable Mould Through the Action of Worms" in English language version.

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darwin-online.org.uk

van Wyhe 2009 van Wyhe, John (2009), Charles Darwin: gentleman naturalist: A biographical sketch, Darwin Online, retrieved 12 February 2009
Darwin 2006, pp. 12 verso–13 recto Darwin, Charles (2006), "Journal", in bvan Wyhe, John (ed.), [Darwin's personal 'Journal' (1809–1881)], Darwin Online, CUL-DAR158.1–76, retrieved 12 February 2009
Darwin 1838 Darwin, C. R. (1838), "On the formation of mould. (Read 1 November 1837)", Proceedings of the Geological Society of London, vol. 2, pp. 574–576, retrieved 12 February 2009
Darwin 1840 Darwin, C. R. (1840), "On the formation of mould. (Read 1 November 1837)", Transactions of the Geological Society, 2, vol. 5, no. 2, London, pp. 505–509, retrieved 12 February 2009
Darwin 1881, p. 139 Darwin, C. R. (1881), The formation of vegetable mould, through the action of worms, with observations on their habits, London: John Murray, retrieved 12 February 2009
Darwin 1881, p. 305. Darwin, C. R. (1881), The formation of vegetable mould, through the action of worms, with observations on their habits, London: John Murray, retrieved 12 February 2009