Darwin, Charles. <br/><br/>
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. .
<br/><br/> Includes index. 
<br/><br/>310  310 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earthworms. <br/>Humification.
<br/><br/><label>Dewey Class. No.: </label>595.16 / D257f