Harness, Charles L. <br/><br/>
Marketing graphite  Information Circular 

 - 1 - 12 
 - Memoir .
<br/><br/><label>ISBN: </label>0 11 884120 3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--England--Bideford<br/>Geology--England--Lundy Island