Collngs G H <br/><br/>
Commercial fertilizer: Their sources and use 

 - 4 
 -  1940 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>52670 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:24, H1;J0