| 9789351240105 | Ecotechnology and Environmental Issues | HB | Kumar, E. K. Prasun | Rs 0.00 | 2009 |
| 9788170356172 | Ecotechnology and Environmental Issues | HB | Kumar, E. K. Prasun | Rs 4495.00 | 2024 |
| 9789383129645 | Ecotechnology and Environmental Issues | EB | Kumar, E. K. Prasun | Rs 15995.00 | 2021 |