Loosli, John K. <br/><br/>
Nonprotein nitrogen in the nutrition of ruminants 
by J. K. Loosli and I. W. McDonald 
 - Rome  Food and Agriculture Organization of the United Nations  1968 
 - viii, 94 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Urea as feed
<br/><br/><label>Dewey Class. No.: </label>636.2  / 08  / 557