Childcraft :   science at work 

 - 153 pages :   colour illustrations ;   25 cm 
<br/><br/> Volume 9 
<br/><br/><label>ISBN: </label>0716660075 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's encyclopedias and dictionaries
<br/><br/><label>Dewey Class. No.: </label>032.02