Toth, T E <br/><br/>
Studies of an agent causing mortality among ducklings immune to duck virus hepatitis.  [electronic resource] 

 -  Avian diseases  Nov 1969 
 - 834-46 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0005-2086 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Drug Resistance, Microbial<br/>Ducks<br/>Hepatitis, Animal--immunology<br/>Neutralization Tests<br/>Picornaviridae<br/>Poultry Diseases--immunology<br/>Viral Vaccines