Kolkata: Biography of Chhau Dance exponent Kumari Bani, celebrating the life and accomplishments of the danseuse, was launched recently. Titled, Chhondobondhone Kumari Bani, the book was launched here in the presence of Raja Pratap Aditya Singh Deo, descendent of Seraikella Rajbari, noted linguist Pabitra Sarkar, educationist Dipankar Dasgupta and musician