| 1 | ||
| Researcher: | Sen, Ratna | |
| University: | University of Calcutta | |
| Language: | English | |
| Shodhganga | ||
| 2 | Land revenue administration in Cachar during British Rule, 1832 to 1900 | |
| Researcher: | Dey, Ratna | |
| Guide: | Barpujari, S K | |
| University: | Gauhati University | |
| Language: | English | |
| 3 | Development of historical and literary styles in sanskrit inscriptions | |
| Researcher: | Datta, Ratna | |
| University: | University of Calcutta | |
| Language: | English | |
| 4 | ||
| Researcher: | Srivastava, Nav Ratna | |
| Guide: | Chandra, P H | |
| University: | Deendayal Upadhyay Gorakhpur University | |
| Language: | Hindi | |
| 5 | ||
| Researcher: | Roy (Sanyal), Ratna | |
| Guide: | Sinha, D P | |
| University: | University of North Bengal | |
| Language: | English | |
| 6 | ||
| Researcher: | Ratna Rani, D Mercy | |
| Guide: | Krishna Kumari, M | |
| University: | Andhra University | |
| Language: | English | |
| 7 | ||
| Researcher: | Ratna Successena Japan Pulla | |
| Guide: | E.V. PADMAJA | |
| University: | Acharya Nagarjuna University, Guntur | |
| Language: | English | |
| Shodhganga | ||
| 8 | ||
| Researcher: | Pandey, Ashwariya Ratna ( | |
| Guide: | Purwar, Rajendra Kumar ( ) | |
| University: | Bundelkhand University | |
| Language: | Hindi | |
| Shodhganga | ||