Darwin, Charles.
The formation of vegetable mould : through the action of worms with observations on their habits / Charles Darwin. - London : Faber and faber, [?]. - 153 p. : ill. ; 21 cm. - Darwin on Humus and the earthworm. .
Includes index.
310 310
Earthworms.
Humification.
595.16 / D257f
The formation of vegetable mould : through the action of worms with observations on their habits / Charles Darwin. - London : Faber and faber, [?]. - 153 p. : ill. ; 21 cm. - Darwin on Humus and the earthworm. .
Includes index.
310 310
Earthworms.
Humification.
595.16 / D257f