Rourke's world of science encyclopedia/ 
Marcia S. Freeman [ and 6 others] 
 - Florida:  Rourke's Publishing,   c2011. 
 - 64 pages:  color illustrations;  28 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>978-1-60044-646-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--encyclopedia, juvenile.<br/>Technology--encyclopedia, juvenile
<br/><br/><label>Dewey Class. No.: </label>DRef 503  / R76