| 21 | ||
| Researcher: | Singh, Manish Kumar | |
| Guide: | Srivastava, Prakash Chandra | |
| University: | V. B. S. Purvanchal University | |
| Shodhganga | ||
| 22 | ||
| Researcher: | Singh, Manish Kumar | |
| Guide: | Singh, Narendra Kumar | |
| University: | V. B. S. Purvanchal University | |
| Shodhganga | ||
| 23 | Environmental impacts of renewable energy technology and its energy efficiency | |
| Researcher: | Singh, Manish Kumar | |
| Guide: | Bagga, Sushil KumarPatil, R.J. | |
| University: | Bhagwant University | |
| Language: | English | |