Hardy,  Sir Alister. <br/><br/>
The open sea: its natural history :  Part 1: the world of plankton / 
by: Sir Alister Hardy. 
 - London, UK :  Collins,  1956. 
 - 335 p. :  il. col. ;  22 cm. 
<br/><br/><br/>Ingles 
<br/><br/><label>ISBN: </label> Normal 
<br/><br/><label>Dewey Class. No.: </label>591.77