Gatke, Heinrich,  1814-1897 <br/><br/>
Heligoland as an ornithological observatory :  the result of fifty years' experience / 
by Heinrich Gatke.translated by Rudolph Rosenstock 
 - Edinburgh :  D. Douglas,  1895 
 - x p., 1 l., 599 p. :  ill., port. (incl. front.) ;  25 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Birds--Germany--Helgoland<br/>Birds--Migration
<br/><br/><label>Dewey Class. No.: </label>598.2943518