Related Clues:

• Degree that takes years
• Degree above an M.S
• Tammy Duckworth's deg
• Part of many a dual deg. program
• It might follow a master's degree
• A great degree?
• Utmost degree?
• Many a college prof
• Goal for many a T.A
• Many a prof has one
• Academic's degree
• Prof's degree, for short
• What Indy Jones got from the Sorbonne
• Advanced academic degree
• Professor's degree, often