| Answer | Crossword Clue |
|---|---|
| OPEC | Cartel headquartered in Vienna |
| OPEC | Cartel based in Vienna |
| OPEC | Oil cartel based in Vienna |
| OPEC | Org. headquartered in Vienna |
| OPEC | Gp. headquartered in Vienna, Austria |
| OPEC | Oil gp. headquartered in Vienna |
| OPEC | Intl. group headquartered in Vienna |
