Related Clues:
- Addis Ababa's cntry.
- Search for the unknown?: Abbr.
- It's full of x's: Abbr.
- High-school math course: Abbr.
- Calc. prerequisite
- ''Solve for x'' subj.
- HS math class
- Subj. with unknowns
- Country where the Blue Nile R. originates
- Archaic verb suffix
- KJV suffix
- Junior H.S. math, perhaps
- Nation on the Med.
- Neighbor of Libya: Abbr.
- Subj. with many unknowns