Richards, A.J. <br/><br/>
Plant breeding systems / 
by A.J. Richards. 
 - 2nd ed. 
 - London :  Chapman & Hall,  1997. 
 - xii, 529 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0412574500 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plant breeding.<br/>Plants--Reproduction.
<br/><br/><label>Dewey Class. No.: </label>631.52