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Advanced sci. degree, 3 letters
Art made of tiles (6), 3 letters
Biologist's degree, in Europe, 3 letters
Physicist's post-grad academic deg., 3 letters
Made a billiards blunder (7), 4 letters
Woman behind the throne, 12 letters
People of the Lie author, 10 letters
The Road Less Traveled author, 10 letters