Coal mining practice  

 - Calcutta:   Caxton Eastern Agencies,   1963 
<br/><br/> Vol. 1; xi, 448p. <br/>Vol. 2; ix, 516p. <br/>Vol. 3; ix, 468p. <br/>Vol. 4; ix, 438p.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science 
<br/><br/><label>Subjects--Index Terms: </label>Coal mining  
<br/><br/><label>Universal Decimal Class. No.: </label>622.33