TY  - SER
ED  - International Labour Organisation. 
ED  - International Labour Office.
TI  - Principles and methods used in determining wages in the petroleum in dustry / 
PY  - 1952///
CY  - Geneva : 
PB  - International Labour Office, 
KW  - Petroleum workers
KW  - Petroleum industry
KW  - Petroleum industry and trade
KW  - Wages
ER  -