| 1 | |
| Researcher: | Singh, Bijay Kumar |
| Guide: | Prasad, C |
| University: | Vinoba Bhave University |
| Language: | English |
| 2 | Mauryakaleen Bhartiya samaj mein jati vyavastha: Ek samajik itihasik adhyayan |
| Researcher: | Singh, Bijay Kumar |
| Guide: | Biswas, D K |
| University: | Tilka Manjhi Bhagalpur University |
| Language: | English |