Baltimore (USA): Telangana Deputy Chief Minister Mallu Bhatti Vikramarka has called upon Non-Resident Indians (NRIs) to contribute their knowledge and Telangana Deputy Chief Minister Mallu Bhatti Vikramarka has called upon NRIs to contribute their knowledge and expertise towards the development of their home state and native villages. He was speaking at the 19th American Telugu Association National Convention here as the Chief Guest on Sunday, August 2.