Hughes Harold D <br/><br/>
Crop production: Principles and practices 

 - New York       Macmillan          1948 
 - x, 816p.  cm. 
<br/><br/><label>Standard No.: </label>52455 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Plant production<br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:5, H8