Minerals resources. 

 - [London]:   Heinemann Educational Books,   [1981].  
 - 63 p. :  ill. ;  21 cm. 
 -  7 .
<br/><br/><label>ISBN: </label>043554036X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines and minerals resources
<br/><br/><label>Dewey Class. No.: </label>622