Bolen, Eric G. <br/><br/>
Whistling-ducks  zoogeography, ecology, anatomy 
Eric G.Bolen and Michael K.Rylander 
 - Lubbock, Texas  Texas Tech University  1983 
 - 67p. 25cm. 
 - Special publications  no.20 .
<br/><br/><label>ISBN: </label>0896721116 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ducks