Nettleship, David N.  1942- <br/><br/>
Census techniques for seabirds of arctic and eastern Canada / 
D.N. Nettleship. 
 - [Ottawa] :  Canadian Wildlife Service,  1976. 
 - 33 p. ;  il. ;  23 cm. 
 - Occasional paper / Canadian Wildlife Service ;  25 .
<br/><br/>Bibliografía: p. 25. 
<br/><br/><br/>Inglés 
<br/><br/><label>Subjects--Index Terms: </label>Sea birds Aves marinas 
<br/><br/><label>Dewey Class. No.: </label>598.07232