Carney, Samuel M. <br/><br/>
Species, age, and sex identification of ducks using wing plumage 
by Samuel M. Carney. 
 - Washington  U.S. Fish and Wildlife Service, 1992. 
 - iii, 144 p.  ill. (some col.)  26 cm. 
<br/><br/><label>ISBN: </label> 23.00 
<br/><br/><label>Source: </label>024-010-00695-1  GPO 
<br/><br/><label>LCCN: </label>ocm27021386  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ducks--Identification.<br/>Ducks--Sexing.<br/>Ducks--Age determination.
<br/><br/><label>GPO Item No.: </label>0612 
<br/><br/><label>Gov. Doc. Class. No.: </label>I 49.2:D 85/7