GAS Cylinder Rules:1940 

 - Karachi:  Department of Explosives, Gov. of Pakistan;  1940. 
 - 14 p.:  ill. ;  22 cm.  
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Industrial gas technology<br/>Pakistan
<br/><br/><label>Gov. Doc. Class. No.: </label>PAK exp 1940 1