The subject of his doctoral thesis is "Online collaborative learning and the training of union staff in developing countries".

It was the subject of my doctoral thesis.

The subject of its thesis is the sponsoring for the women' sports.

Banach spaces and operator theory, the subject of his thesis.

It had been the subject of his thesis.

Would it be any better in college, where he'd turn into the subject of every psych major's term paper and master's thesis?

The subject of his doctoral thesis was "meaning" and "existence" in mathematics.

The subject of his thesis was the 24-hour rhythms of the Norway rat.

He had wanted to make Arnold the subject of his thesis, but his adviser told him that it was too late to change.

The subject of his doctoral thesis had been Henry Adams, a descendant.