Barnes, Robert F. <br/><br/>
Forages : the science of grassland agriculture  / 
Robert F. Barnes  /  and others /   
 - 6 th. ed. 
 - Ames, Iowa  :   Blackwell,  2007 
 - 2 v. :   ilus. 
<br/><br/><label>ISBN: </label>978-0-8138-0232-9 
<br/><br/><label>LCCN: </label>168615 
<br/><br/><label>Dewey Class. No.: </label>633.2 B3 2007