| 1 | Pracheen Bhartiya krishi evam tajjanit samasyaon ka adhyayan 200 B C to 300 A D | |
| Researcher: | Singh, Prem Kumar | |
| University: | Babasaheb Bhimrao Ambedkar Bihar University | |
| Language: | English | |
| 2 | ||
| Researcher: | Singh, Prem Kumar | |
| Guide: | Mital, V P | |
| University: | Bundelkhand University | |
| Language: | English | |
| Shodhganga | ||
| 3 | ||
| Researcher: | Singh, Prem Kumar | |
| Guide: | Ramachandran, A V | |
| University: | Maharaja Sayajirao University of Baroda | |
| Language: | English | |
| Shodhganga | ||