Darwin on humus and the earthworms : the formation of vegetable mould through the action of worms with observations on their habits / by Charles Darwin ; with an introduction by Sir Albert Howard.

  • Darwin, Charles, 1809-1882.
Date:
1945

Licence: Public Domain Mark

Credit: Darwin on humus and the earthworms : the formation of vegetable mould through the action of worms with observations on their habits / by Charles Darwin ; with an introduction by Sir Albert Howard. Source: Wellcome Collection.

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