| 1 | Aspect of socio-economic history of Patna District, 1765-1856 | |
| Researcher: | Sinha, Ranjan | |
| Guide: | Sinha, B K | |
| University: | Patna University | |
| Language: | English | |
| 2 | Sawadhinata ke bad ki Hindi kahani ka shilp-vidhan (1950-1970) | |
| Researcher: | Sinha, Ranjan | |
| Guide: | Sharma, Harbans Lal | |
| University: | Aligarh Muslim University | |
| 3 | Aquifer mapping and characterization of Alluvial parts of Kasai - Suvarnarekha River Basin, India | |
| Researcher: | Sinha, Ranjan | |
| Guide: | Shalivahan | |
| University: | Indian School of Mines, Dhanbad | |
| Language: | English | |
| 4 | ||
| Researcher: | Sinha, Ranjan Kumar | |
| Guide: | Chellani, Dilip K | |
| University: | Maharaja Sayajirao University of Baroda | |
| Language: | English | |
| Shodhganga | ||