Kerrod,Robin,  <br/><br/>
Sumber semula jadi 

 - 64 pages :   colour illustrations ;   26 cm 
 - Tinjau dan selidik sains .
 - Tinjau dan selidik sains .
<br/><br/> Let's investigate science - Natural resources 
<br/><br/><label>ISBN: </label>9835802041 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences ; Natural resources
<br/><br/><label>Dewey Class. No.: </label>333.79