About Abigail Ostien Karos Books by Abigail Ostien Karos Dialogues on Diversity and Unity in Federal Countries by (author) Rupak Chattopadhyay & Abigail Ostien Karos Dialogues sur la Diversité et l'Unité dans les Pays Fédéraux by (author) Rupak Chattopadhyay & Abigail Ostien Karos Dialogues on Diversity and Unity in Federal Countries by (author) Rupak Chattopadhyay & Abigail Ostien Karos