Principles of cultivar development / 
Walter R. Fehr ; with the assistance of Elinor L. Fehr and Holly J. Jessen. 
 - New York :  Macmillan ,  c1987. 
 - 2 v. :  ill. ;  25 cm. 
<br/><br/>v. 1. Theory and technique -- v. 2. Crop species. 
<br/><br/><label>ISBN: </label>0029499208 (v. 1) 0029491819 (v. 2) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant-breeding.<br/>Field crops--Breeding.<br/>Field crops--Varieties.
<br/><br/><label>LC Class. No.: </label>SB123  / .P725 1987