D B ยท D. Bhardwaj
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Applications of Derivatives Made Easy | 978-81-318-0203-8 (81-318-0203-5) | 2007 |
| Co-ordinate Geometry Made Easy | 978-81-318-0311-0 (81-318-0311-2) | 2008 |
| Integral Calculus Made Easy | 978-81-7008-933-9 (81-7008-933-6) | 2006 |