Report on calcium carbide industry. 

 - Delhi  Manager of Publications          1956 
 - 32p  cm. 
<br/><br/> App.: p.26-30p 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X9(F42240) : 531.2.N56r, J6