Darwin, Charles,  1809-1882. <br/><br/>
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. 
 - London :  Faber and Faber,  1945 
 - 153 p. :  illus. ;  23 cm. 
<br/><br/> First published in 1881 under title: The formation of vegetable mould through the action of worms. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earthworms.<br/>Humification.
<br/><br/><label>LC Class. No.: </label>QL391  / D37 1945