ChemInform Abstract: Direct Amide Bond Formation from Carboxylic Acids and Amines Using Activated Alumina Balls as a New, Convenient, Clean, Reusable and Low Cost Heterogeneous Catalyst. Issue 10 (7th March 2013) - Ghosh, Sabari; Bhaumik, Asim; Mondal, John; Mallik, Amit; Sengupta, Sumita; Mukhopadhyay, Chhanda