Gale encyclopedia of science  
/ The Gale Group, volume 1, aardvark-centrifuge  
 - 4th ed.  
 - Detroit:   The Gale Group,   2008  
 - xxxviii, 858p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Alphabetical list 
<br/><br/><label>Subjects--Index Terms: </label>Encyclopedia  
<br/><br/><label>Universal Decimal Class. No.: </label>R 5/6(031)   / P8.1