Corn and corn improvement / 
editor, G.F. Sprague 
 - Revised ed. 
 - Madison, Wis. :  American Society of Agronomy Inc.,  1977 
 - xvi ,774 p. :  ill., charts. ;  24 cm . 
 - Agronomy ;  no.18 .
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>0891180435 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Corn<br/>Corn--Breeding