Beard, Crowell <br/><br/>
Ptosis 

 - 3rd ed. 
 - St. Louis  C.V. Mosby Company  1981 
 - ix, 276 P.  Illustration 
<br/><br/><label>ISBN: </label>0801605326 
<br/><br/><label>Dewey Class. No.: </label>617.771  / B21