Grolier student encyclopedia:   pyramid - scientific instruments. 

 - Danbury,CT :  Grolier,  2004. 
 - 64 p.:   col. ill  29 cm. 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>0-7171-5879-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children's encyclopedias and dictionaries
<br/><br/><label>LC Class. No.: </label>031 G89 c2004 v.14