Statistics of mines in India  
/ The Director-General of Mines Safety 
 - Dhanbad:   The Director-General of Mines Safety,   1970 
<br/><br/> Vol. 2 (Non-coal); 151p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science
<br/><br/><label>Universal Decimal Class. No.: </label>622:31   / L3