Darwin on humus and the earthworm; the formation of vegetable mould through the action of worms with observations on their habits
Darwin, Charles
Darwin on humus and the earthworm; the formation of vegetable mould through the action of worms with observations on their habits - London: Faber and Faber, 1966 - 153 p. illus. 23 cm
Earthworms
QL391 595.16
Darwin on humus and the earthworm; the formation of vegetable mould through the action of worms with observations on their habits - London: Faber and Faber, 1966 - 153 p. illus. 23 cm
Earthworms
QL391 595.16