Gas world 

 - London :  Benn Brothers,  1967- 
 - v. 
<br/><br/><label>ISSN: </label>0016-5026 
 = Gas world   (1967) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>GAS NATURAL
<br/><br/><label>Universal Decimal Class. No.: </label>662