Loosli, J. 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. ;  23 cm. 
 - FAO Agricultural Studies ;  no. 75 .
<br/><br/>References : p. 75-94 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ruminants--Feeding and feeds<br/>Nitrogen in animal nutrition