Clarke, Frank Wigglesworth <br/><br/>
The data of geochemistry 
Frank Wigglesworth Clarke. 
 - 5th ed. 
 - Washington  Govt. Print Off.  1924. 
 - 839 p.  tables  23 cm. 
 - United States  Geological Survey  Bulletin;  770. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geochemistry