Dickson J G ` <br/><br/>
Diseases of field crops 

 -  1947 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>51979 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Plant disease<br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:4, H7;1