Principles and methods used in determining wages in the petroleum in dustry /    
International Labour Organisation, Petroleum Committee, Fou rth Session, The Hague. 
 - Geneva :   International Labour Office,   1952. 
 - v 69 p. ;    29 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum workers.--Petroleum industry.------<br/>Petroleum industry and trade.--Petroleum industry.------<br/>Wages --Petroleum industry.------