| 1 | Prachin Bhartiya krishi evam tajjanita samasyaon ka adhyayan |
| Researcher: | Surendra Kumar |
| Guide: | Satarthi, H C |
| University: | Babasaheb Bhimrao Ambedkar Bihar University |
| Language: | English |
| 2 | |
| Researcher: | Surendra Kumar |
| Guide: | Singh, U N |
| University: | Magadh University |
| Language: | English |