Preferential uses of gas. 

 - Geneva :  UN ,  1963 
 - iv, 29 p. :  ill. ;  35 cm.  
 - Mimeo. .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Oil and gas<br/>Gases
<br/><br/><label>Dewey Class. No.: </label>338.473  / ECE