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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