Ekman, Sven,  1876-1964. <br/><br/>
Zoogeography of the sea / 
by Sven Ekman 
 - London :  Sidgwick and Jackson,  1953 
 - xiv, 417 p. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoogeography