TY  - BOOK
AU  -  Loosli,John K.
AU  -  McDonald,I.W.
ED  -  Food and Agriculture Organization of the United Nations.
TI  -  Nonprotein nitrogen in the nutrition of ruminants / 
PY  - 1968///
CY  -  Rome : 
PB  -  Food and Agriculture Organization of the United Nations, 
KW  -  Ruminants --
KW  -  Feeding and feeds
KW  -  Feeding
KW  -  Urea as feed
N1  -  Includes bibliographical references (p. 79-94)
ER  -