Darwin on humus and the earthworm; the formation of vegetable mould through the action of worms with observations on their habits. With an introd. by Sir Albert Howard.
By: Darwin, Charles, 1809-1882.
Material type:
First published in 1881 under title: The formation of vegetable mould through the action of worms.
At head of title: Darwin on humus and the earthworm.
First published 1881 by John Murray.
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