Non-protein nitrogen in the nutrition of ruminants. 

 - Rome :  FAO ,  1968 
 - viii, 94p. :  ill. ;  22 cm.  
 - FAO agricultural studies .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture<br/>Livestock
<br/><br/><label>Dewey Class. No.: </label>636  / FAO-5