Hughes Harold D <br/><br/>
Crop production 

 - 3 
 - New York       Macmillan          1972 
 - viii, 627p.  cm. 
<br/><br/> Includes bibliographies 
<br/><br/><label>Standard No.: </label>52457 
<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, L2