He specialized in medieval studies and history of the papacy.

He was specialized in Finnish military history of the 16th and 17th centuries.

He specialized largely in American political and economic history.

The store specializes in history, biography and books by and about women.

"I'd specialize in reading and history," she says, adding that her favorite historical period is the 1920s.

He specialized in Chinese social and intellectual history of the pre-modern period.

James Kaplan, a lawyer, specializes in politics and economic history.

She specializes in life sciences, natural history, and evolutionary biology from the 17th to the 20th century.

He specializes in military history, but has also published articles on travel, and skiing.

I specialize in European history and travel abroad quite often.