Gregory, Cedric Errol <br/><br/>
Rudiments of mining practice / 
by Cedric E. Gregary 
 - Clausthal-Zellerfeld, Germany :  Trans Tech Publications,  1983 
 - 141 p. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0878490426 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mining engineering