MEYER, R.F. Y OTRO <br/><br/>
THE FUTURE OF SMALL SCALE MINING 

 - 0 
 - U.S.A.  MCGRAW-HILL/INTERAMERICAN  1980 
 - 502 pag  29.5 cm 
 - 0  0 .
<br/><br/>GEOLOGY-DEPOSITS-COMMODITIES/MINERAL PRODUCTION-MARKETING 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CIENCIAS PURAS
<br/><br/><label>Dewey Class. No.: </label>549.23  / M48