RUMINANT NITROGEN USAGE 

 - AMERICA  PRESS  1985 
 - 138 
<br/><br/><label>ISBN: </label>030903597-X 
<br/><br/><label>LC Class. No.: </label>636.20852/RUM  / 3 
<br/><br/><label>Dewey Class. No.: </label>636.20852/RUM  / 3