Poultry grading manual  
/ Agricultural Marketing Service  
 - Washington, D.C.,   Agricultural Marketing Service,   1977 
 - 30p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal husbandry 
<br/><br/><label>Subjects--Index Terms: </label>Ducks  Pigeons 
<br/><br/><label>Universal Decimal Class. No.: </label>637.53  / L7