Alexander, D J <br/><br/>
Experimental assessment of the pathogenicity of the Newcastle disease viruses from outbreaks in Great Britain in 1997 for chickens and turkeys, and the protection afforded by vaccination.  [electronic resource] 

 -  Avian pathology : journal of the W.V.P.A  Oct 1999 
 - 501-11 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0307-9457 
<br/><br/><label>Standard No.: </label>10.1080/03079459994542  doi