Related Clues:

• Oil measure: Abbr.
• Beer holders: Abbr.
• Unit of oil production: Abbr.
• Tankerload: Abbr.
• OPEC units
• OPEC units: Abbr.
• Oil shipment: Abbr.
• Unit of oil production, briefly
• OPEC measure
• Crude container?: Abbr.
• Barrel, abbr.
• 42 gal., to OPEC
• OPEC unit
• Crude containers: Abbr.
• Crude amt.