Related Clues:

• Vienna-based cartel
• Trade org. since 1960
• Crude cartel
• UAE et al.
• Oil cartel letters
• Intl. oil group
• Cartel acronym
• Slick cartel?
• 'Well'-financed org.
• Crude org.
• Oil org.
• Crude group
• Well-financed org.?
• Grp. with crude interests
• Oil exportation grp.