Cumming, James D. <br/><br/>
Diamond drill handbook. 

 - Toronto :  Smit & Sons,  1951. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minería
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>622.23