Geological magazine : Vol. 87 Iss. 1-6 Year. 1950 

 - Herts  Stephen Austin & Sons, Ltd  1950 
 - [V.P.]  ill.  21.5cm x 14cm  BJ 
 - 6 
<br/><br/><label>ISSN: </label>00167568 13594656 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth science
<br/><br/><label>Dewey Class. No.: </label>550  / GEO