Darwin, Charles, 1809-1882.
The formation of vegetable mould : through the action of worms with observations on their habits / By Charles Darwin ; 13th thousand with illustrations. - London : Murray, 1904. - viii, 298 p. : ill. ; 20 cm.
Includes index.
04003013
Opisthopora.
Humification.
QL394 / .D3 1897
575.01 / DAF
The formation of vegetable mould : through the action of worms with observations on their habits / By Charles Darwin ; 13th thousand with illustrations. - London : Murray, 1904. - viii, 298 p. : ill. ; 20 cm.
Includes index.
04003013
Opisthopora.
Humification.
QL394 / .D3 1897
575.01 / DAF