Hopkins Donald P <br/><br/>
Chemicals humus, and the soil 

 - London  Faber and Faber         1949 
 - 278p.  cm. 
<br/><br/><label>Standard No.: </label>52204 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant Anatomy
<br/><br/><label>Dewey Class. No.: </label>J:24, H9