Smoothey, Marion,  <br/><br/>
Triangles 

 - 64 pages :   colour illustrations ;   26 cm 
 - Let's investigate .
 - Let's investigate .
<br/><br/><label>ISBN: </label>983300136X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Triangle - Juvenile literature ; Pyramid (Geometry) - Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>510