Shukla, Vijay. creator text New Delhi S. K. Kataria & Sons (Publishers) 2011 monographic 330p. ; Operating System 005.43SHU 8189757598 (paperback) 9788189757595 (paperback) http://www.amazon.com/exec/obidos/ASIN/8189757598/chopaconline-20 http://www.amazon.com/exec/obidos/ASIN/8189757598/chopaconline-20