Walker, Sally M. <br/><br/>
Researching rocks / 
Sally M. Walker. 
 - Minneapolis :  Lerner Publications Company,  ©2013. 
 - 40 pages :  colour illustrations ;  24 cm. 
 - Searchlight books. Do you dig Earth science? .
<br/><br/>Includes bibliographical references (pages 39) and index. 
<br/><br/><label>ISBN: </label>9781467700184 (hardback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rocks--Juvenile literature.<br/>Geology--Juvenile literature
<br/><br/><label>Dewey Class. No.: </label>J 552 WALK