Orskov, E. R. <br/><br/>
Energy nutrition in ruminants / 
E. R. Orskov and M. Ryle 
 - London :  Elsevier Applied Science,  1990 
 - 149 p. :  ill. ;  23 cm. 
<br/><br/>References: p. 143-144 
<br/><br/><label>ISBN: </label>1851664394 
<br/><br/><label>LCCN: </label>8-971460 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ruminants--Feeding and feeds<br/>Ruminants--Nutrition