Explosives / 
by department of commerce and Industry 
 - Calcutta :  Govt. Press,  1908 
 - 7 p. ;  35 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Transducers<br/>Mining geology--Computer programs
<br/><br/><label>Dewey Class. No.: </label>622.2