Hutchinson encyclopedia 1998 
Helicon Publishing                                   
 - 11th ed. 
 - UK  Helicon Publishing  1997 
 - ix, 1199p. 
<br/><br/><label>ISBN: </label>1-85986-202-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Encyclopedia-Science<br/>Science encyclopedia
<br/><br/><label>Universal Decimal Class. No.: </label>031:5  / HEL