| 21 | Saltanatkaleen bhartiya udhyogo ka vishleshan 1206 E se 1526 E tak | |
| Researcher: | Singh, Rekha | |
| Guide: | Lal, D N | |
| University: | V. B. S. Purvanchal University | |
| Shodhganga | ||
| 22 | ||
| Researcher: | Singh, Rekha | |
| Guide: | Chauhan, S S | |
| University: | V. B. S. Purvanchal University | |
| Shodhganga | ||
| 23 | ||
| Researcher: | Singh, Rekha | |
| Guide: | Tiwari, Sudhakar Prasad | |
| University: | V. B. S. Purvanchal University | |
| Shodhganga | ||
| 24 | Rajbhasha Hindi aur banking me usaka karyanvayan_prayog_upalabdhiya aur chunautiya | |
| Researcher: | Singh, Rekha Rani | |
| Guide: | Shukla, Uma | |
| University: | SNDT Womens University | |
| Shodhganga | ||
| 25 | ||
| Researcher: | Karmveer Singh, Rekha | |
| Guide: | Nanda, Sanju | |
| University: | Maharshi Dayanand University | |
| Language: | English | |
| Shodhganga | ||
| 26 | Synthetic studies in heterocyclic compounds containing nitrogen sulphur and oxgen | |
| Researcher: | Singh, Rekha Rani Ran | |
| Guide: | Makrandi, J K | |
| University: | Maharshi Dayanand University | |
| Language: | English | |
| 27 | ||
| Researcher: | Singh, Rekha Kumari R | |
| Guide: | Davda, C R | |
| University: | Veer Narmad South Gujarat University | |
| Language: | English | |
| Shodhganga | ||