Ad KnotterAd Knotter is Professor of Comparative Regional History at the Faculty of Arts and Social Sciences, Maastricht University, the Netherlands, and Director of the Sociaal Historisch Centrum voor Limburg (Center for the Social History of Limburg) at the ame university. He is a member of the Editorial Committee of the International Review of Social History. His areas of research are comparative regional history and historical border studies, the comparative history of mining regions, labour history and migration history. Read More Read Less