Annual report 
Agricultural Research Institute of Northern Ireland 
 - Hillsborough  The Agricultural Research Institue of Northern Ireland 
 - Anual 
<br/><br/>Vol. 61; Aņo 1987-1988 ; Vol. 63-76; Aņo 1989-2003 ; Vol. 78; Aņo 2004-2005 
<br/><br/><label>Subjects--Index Terms: </label>Produccion animal