YOUNG, GEORGE J. <br/><br/>
ELEMENTS OF MINING 

 - 4 
 - NEW YORK-U.S.A.  MCGRAW-HILL BOOK COMPANY  1946 
 - 755 pag  23 cm 
 - 0  0 .
<br/><br/>INTRODUCTION/PROSPECTING/BORING/DRILLING FOR BLASTING PURPOS 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CIENCIAS PURAS
<br/><br/><label>Dewey Class. No.: </label>549  / Y78