Statistics of mines in India. 

 - Dhanbad  Director general of Mines Safely.     1972 
 - "ii, 196p"  cm. 
<br/><br/><label>Standard No.: </label>175193 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X9(HZ).2.N72 S, L2"