Eggert Roberick G <br/><br/>
Metallic mineral exploration    An economic analysi    

 - Washington  Resources fo the future. USA        1987 
 - 90p. Bib chapterwise.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minerals
<br/><br/><label>Dewey Class. No.: </label>X9(H1), M7