Hughes, Harold A. <br/><br/>
Fundamentals of machine operation: crop chemicals / 
Harold A. Hughes. 
 - Moline, illinois :  Deere & Company,  1982. 
 - viii, 269 pages :  illustrations ;  28 cm. 
<br/><br/> Fundamentals of machine operation series. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crop chemicals.