Author : Dr. Triloki Nath Srivastava & Ramdev Misr (Gangay)

Book Code : 1212

Language : Hindi

ISBN : 978-93-6207-333-4

Author : Dr. J. P. Goel, Dr. S. C. Rastogi, Dr. Sunita Bhagia & Er. Meera Goyal

Book Code : 1215

Language : English

ISBN : 978-93-6207-851-3

Author : Rajamohan Srivastava & Amit Ganguly

Book Code : 1213

Language : English

ISBN : 978-93-6207-746-2