Ortleb p , Edward  <br/><br/>
Geeology rocks and minerals :  

 - Milliken :   London ;  1986. 
 - 10 p ; 24 cm .  01 
 - 2024-10-01 
<br/><br/><label>ISBN: </label>1558630910 
<br/><br/><label>Nat. Bib. No.: </label>0010547 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>ORT 
<br/><br/><label>Universal Decimal Class. No.: </label>552