Zweers, G. A. <br/><br/>
Mechanics of feeding of the mallard (Anas platyrhynchos L., Aves, Anseriformes) :  the lingual apparatus and the suction-pressure pump mechanism of strining / 
G. A. Zweers, A. F. C.Gerritsen and P.J.Van Kranenburg-Voogd. 
 - Basel :  S. Karger,  1977. 
 - 109 p.  :  ill. ;  23 cm. 
 - Contributions to vertebrate evolution ;  v.3 .
<br/><br/>Bibliography : p.(104)-107. 
<br/><br/><label>ISBN: </label>3805524242 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mallard.<br/>Birds--Feeding and feeds.<br/>Birds--Anatomy.<br/>Ducks.